# Electronic Supplementary Material (ESI) for RSC Advances.
# This journal is © The Royal Society of Chemistry 2017

####################################################################### 
# 
# This file contains crystal structure data downloaded from the 
# Cambridge Structural Database (CSD) hosted by the Cambridge 
# Crystallographic Data Centre (CCDC).
# 
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# guidelines are available at http://www.ccdc.cam.ac.uk/access/V1 
# 
# Audit and citation data items may have been added by the CCDC. 
# Please retain this information to preserve the provenance of 
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data_sa3397
_database_code_depnum_ccdc_archive 'CCDC 1532199'
_audit_update_record             
;
2017-02-10 deposited with the CCDC.
2017-05-31 downloaded from the CCDC.
;
_audit_creation_date             2014-05-22
_audit_creation_method           
;
Olex2 1.2
(compiled 2014.03.20 svn.r2914 for OlexSys, GUI svn.r4816)
;
_shelxl_version_number           2013-4
_chemical_name_common            ?
_chemical_name_systematic        
;
 ?
;
_chemical_formula_moiety         'C23 H24 N O5 S2'
_chemical_formula_sum            'C23 H24 N O5 S2'
_chemical_formula_weight         458.55
_chemical_melting_point          ?
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
S S 0.1246 0.1234 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_shelx_space_group_comment       
;
The symmetry employed for this shelxl refinement is uniquely defined
by the following loop, which should always be used as a source of
symmetry information in preference to the above space-group names.
They are only intended as comments.
;
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_H-M_alt        'P -1'
_space_group_name_Hall           '-P 1'
loop_
_space_group_symop_operation_xyz
'x, y, z'
'-x, -y, -z'

_cell_length_a                   10.184(2)
_cell_length_b                   10.710(2)
_cell_length_c                   11.083(2)
_cell_angle_alpha                104.70(3)
_cell_angle_beta                 103.61(3)
_cell_angle_gamma                102.46(3)
_cell_volume                     1086.6(4)
_cell_formula_units_Z            2
_cell_measurement_reflns_used    4213
_cell_measurement_temperature    173.1500
_cell_measurement_theta_max      27.4825
_cell_measurement_theta_min      2.0562
_shelx_estimated_absorpt_T_max   ?
_shelx_estimated_absorpt_T_min   ?
_exptl_absorpt_coefficient_mu    0.281
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8925
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   ?
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.401
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_description       block
_exptl_crystal_F_000             482
_exptl_crystal_size_max          0.504
_exptl_crystal_size_mid          0.428
_exptl_crystal_size_min          0.31
_exptl_special_details           
;
 ?
;
_exptl_transmission_factor_max   ?
_exptl_transmission_factor_min   ?
_diffrn_reflns_av_R_equivalents  0.0234
_diffrn_reflns_av_unetI/netI     0.0216
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            14612
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         27.497
_diffrn_reflns_theta_min         3.189
_diffrn_ambient_temperature      173.1500
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       
;
Saturn724 (2x2 bin mode)
;
_diffrn_measurement_device_details 
;
AFC10: Fixed Chi 2 circle
;
_diffrn_measurement_device_type  'Saturn724+ CCD'
_diffrn_measurement_method       dtprofit.ref
_diffrn_number_total             4964
_diffrn_orient_matrix_type       d*Trek
_diffrn_orient_matrix_UB_11      -0.0300
_diffrn_orient_matrix_UB_12      -0.0490
_diffrn_orient_matrix_UB_13      -0.0887
_diffrn_orient_matrix_UB_21      0.0442
_diffrn_orient_matrix_UB_22      -0.0908
_diffrn_orient_matrix_UB_23      -0.0001
_diffrn_orient_matrix_UB_31      -0.0668
_diffrn_orient_matrix_UB_32      -0.0675
_diffrn_orient_matrix_UB_33      0.0241
_diffrn_radiation_detector       CCD
_diffrn_radiation_monochromator  'Graphite Monochromator'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_source                   'Sealed Tube'
_diffrn_source_current           30.0000
_diffrn_source_power             1.5000
_diffrn_source_voltage           50.0000
_diffrn_special_details          
;
 ?
;
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                4756
_reflns_number_total             4958
_reflns_special_details          
;
 Reflections were merged by SHELXL according to the crystal
 class for the calculation of statistics and refinement.
 
 _reflns_Friedel_fraction is defined as the number of unique
 Friedel pairs measured divided by the number that would be
 possible theoretically, ignoring centric projections and
 systematic absences.
;
_reflns_threshold_expression     'I > 2σ(I)'
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2007)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2013)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2013)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2013)'
_computing_structure_solution    
;
 'XS (Sheldrick, 2013)'
;
_refine_diff_density_max         0.348
_refine_diff_density_min         -0.794
_refine_diff_density_rms         0.046
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.101
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     282
_refine_ls_number_reflns         4958
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0397
_refine_ls_R_factor_gt           0.0373
_refine_ls_restrained_S_all      1.101
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     
'w=1/[σ²(Fo²)+(0.0391P)²+0.5926P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0912
_refine_ls_wR_factor_ref         0.0928
_refine_special_details          
;
 ?
;
_olex2_refinement_description    
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 N1(H1), C7(H7), C8(H8), C9(H9)
2.b Aromatic/amide H refined with riding coordinates:
 C1(H1A), C2(H2), C3(H3), C4(H4), C5(H5), C12(H12), C13(H13), C14(H14),
 C15(H15), C16(H16), C18(H18), C19(H19), C20(H20), C21(H21)
2.c Idealised Me refined as rotating group:
 C10(H10A,H10B,H10C), C23(H23A,H23B,H23C)
;
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     ?
_atom_sites_solution_secondary   ?
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_site_symmetry_order
_atom_site_calc_flag
_atom_site_refinement_flags_posn
_atom_site_refinement_flags_adp
_atom_site_refinement_flags_occupancy
_atom_site_disorder_assembly
_atom_site_disorder_group
S1 S 0.34738(4) 0.39340(3) 0.78193(3) 0.01947(9) Uani 1 1 d . . . . .
S2 S 0.19617(4) 0.09145(3) 0.92666(3) 0.01972(9) Uani 1 1 d . . . . .
O1 O 0.20782(12) 0.39655(12) 0.78675(11) 0.0287(2) Uani 1 1 d . . . . .
O2 O 0.46475(13) 0.51390(11) 0.84782(11) 0.0294(3) Uani 1 1 d . . . . .
O3 O 0.31151(12) 0.10028(12) 1.03576(10) 0.0278(2) Uani 1 1 d . . . . .
O4 O 0.08782(12) -0.03492(11) 0.85843(11) 0.0288(2) Uani 1 1 d . . . . .
O5 O 0.51198(10) 0.23805(10) 0.83095(10) 0.0225(2) Uani 1 1 d . . . . .
N1 N 0.45310(13) 0.11351(12) 0.71605(12) 0.0201(2) Uani 1 1 d . . . . .
H1 H 0.4072 0.1301 0.6358 0.024 Uiso 1 1 calc R . . . .
C1 C 0.47008(18) 0.35834(17) 0.58777(17) 0.0302(3) Uani 1 1 d . . . . .
H1A H 0.5554 0.4034 0.6538 0.036 Uiso 1 1 calc R . . . .
C2 C 0.4670(2) 0.3123(2) 0.4584(2) 0.0422(5) Uani 1 1 d . . . . .
H2 H 0.5508 0.3256 0.4371 0.051 Uiso 1 1 calc R . . . .
C3 C 0.3406(3) 0.2472(2) 0.36150(18) 0.0442(5) Uani 1 1 d . . . . .
H3 H 0.3396 0.2159 0.2749 0.053 Uiso 1 1 calc R . . . .
C4 C 0.2150(2) 0.2275(2) 0.39080(18) 0.0433(5) Uani 1 1 d . . . . .
H4 H 0.1299 0.1850 0.3239 0.052 Uiso 1 1 calc R . . . .
C5 C 0.21531(18) 0.27124(17) 0.52051(16) 0.0302(3) Uani 1 1 d . . . . .
H5 H 0.1312 0.2571 0.5414 0.036 Uiso 1 1 calc R . . . .
C6 C 0.34351(16) 0.33615(14) 0.61741(14) 0.0206(3) Uani 1 1 d . . . . .
C7 C 0.39065(15) 0.26769(14) 0.85620(14) 0.0186(3) Uani 1 1 d . . . . .
H7 H 0.4108 0.3050 0.9512 0.022 Uiso 1 1 calc R . . . .
C8 C 0.27202(14) 0.13308(14) 0.80537(13) 0.0174(3) Uani 1 1 d . . . . .
H8 H 0.1978 0.1316 0.7300 0.021 Uiso 1 1 calc R . . . .
C9 C 0.35186(15) 0.03053(14) 0.76103(14) 0.0189(3) Uani 1 1 d . . . . .
H9 H 0.4032 0.0110 0.8373 0.023 Uiso 1 1 calc R . . . .
C10 C 0.57294(17) 0.06261(17) 0.70611(18) 0.0310(4) Uani 1 1 d . . . . .
H10A H 0.6426 0.1279 0.6910 0.047 Uiso 1 1 calc GR . . . .
H10B H 0.5417 -0.0204 0.6346 0.047 Uiso 1 1 calc GR . . . .
H10C H 0.6135 0.0468 0.7862 0.047 Uiso 1 1 calc GR . . . .
C11 C 0.11510(15) 0.21537(15) 0.98103(14) 0.0207(3) Uani 1 1 d . . . . .
C12 C -0.02986(16) 0.18847(16) 0.92791(15) 0.0254(3) Uani 1 1 d . . . . .
H12 H -0.0822 0.1095 0.8595 0.030 Uiso 1 1 calc R . . . .
C13 C -0.09516(17) 0.28111(18) 0.97841(17) 0.0310(4) Uani 1 1 d . . . . .
H13 H -0.1920 0.2647 0.9433 0.037 Uiso 1 1 calc R . . . .
C14 C -0.01676(19) 0.39805(18) 1.08092(17) 0.0329(4) Uani 1 1 d . . . . .
H14 H -0.0613 0.4592 1.1155 0.040 Uiso 1 1 calc R . . . .
C15 C 0.12788(19) 0.42423(17) 1.13215(17) 0.0324(4) Uani 1 1 d . . . . .
H15 H 0.1801 0.5036 1.2001 0.039 Uiso 1 1 calc R . . . .
C16 C 0.19525(17) 0.33308(16) 1.08287(15) 0.0256(3) Uani 1 1 d . . . . .
H16 H 0.2923 0.3503 1.1173 0.031 Uiso 1 1 calc R . . . .
C17 C 0.26584(15) -0.10029(14) 0.65362(15) 0.0223(3) Uani 1 1 d . . . . .
C18 C 0.20697(17) -0.09789(18) 0.52792(16) 0.0313(4) Uani 1 1 d . . . . .
H18 H 0.2180 -0.0158 0.5117 0.038 Uiso 1 1 calc R . . . .
C19 C 0.13145(19) -0.2178(2) 0.42586(18) 0.0424(5) Uani 1 1 d . . . . .
H19 H 0.0927 -0.2159 0.3418 0.051 Uiso 1 1 calc R . . . .
C20 C 0.1147(2) -0.33878(19) 0.4506(2) 0.0462(5) Uani 1 1 d . . . . .
H20 H 0.0644 -0.4190 0.3831 0.055 Uiso 1 1 calc R . . . .
C21 C 0.17230(19) -0.34154(17) 0.5753(2) 0.0414(5) Uani 1 1 d . . . . .
H21 H 0.1591 -0.4242 0.5905 0.050 Uiso 1 1 calc R . . . .
C22 C 0.25010(17) -0.22328(16) 0.67977(18) 0.0290(3) Uani 1 1 d . . . . .
C23 C 0.3139(2) -0.23194(18) 0.8128(2) 0.0398(4) Uani 1 1 d . . . . .
H23A H 0.4151 -0.1998 0.8367 0.060 Uiso 1 1 calc GR . . . .
H23B H 0.2859 -0.3241 0.8110 0.060 Uiso 1 1 calc GR . . . .
H23C H 0.2817 -0.1774 0.8759 0.060 Uiso 1 1 calc GR . . . .


_geom_special_details            
;
 All esds (except the esd in the dihedral angle between two l.s. planes)
 are estimated using the full covariance matrix.  The cell esds are taken
 into account individually in the estimation of esds in distances, angles
 and torsion angles; correlations between esds in cell parameters are only
 used when they are defined by crystal symmetry.  An approximate (isotropic)
 treatment of cell esds is used for estimating esds involving l.s. planes.
;
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
_geom_bond_publ_flag
S1 O1 1.4421(12) . ?
S1 O2 1.4397(13) . ?
S1 C6 1.7580(15) . ?
S1 C7 1.8255(15) . ?
S2 O3 1.4410(13) . ?
S2 O4 1.4368(13) . ?
S2 C8 1.8019(15) . ?
S2 C11 1.7629(16) . ?
O5 N1 1.4811(16) . ?
O5 C7 1.4117(17) . ?
N1 C9 1.4740(18) . ?
N1 C10 1.4557(19) . ?
C1 C2 1.383(2) . ?
C1 C6 1.390(2) . ?
C2 C3 1.370(3) . ?
C3 C4 1.378(3) . ?
C4 C5 1.393(3) . ?
C5 C6 1.382(2) . ?
C7 C8 1.540(2) . ?
C8 C9 1.5520(19) . ?
C9 C17 1.510(2) . ?
C11 C12 1.389(2) . ?
C11 C16 1.389(2) . ?
C12 C13 1.385(2) . ?
C13 C14 1.384(3) . ?
C14 C15 1.385(3) . ?
C15 C16 1.384(2) . ?
C17 C18 1.390(2) . ?
C17 C22 1.403(2) . ?
C18 C19 1.395(2) . ?
C19 C20 1.375(3) . ?
C20 C21 1.379(3) . ?
C21 C22 1.401(2) . ?
C22 C23 1.500(3) . ?

loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
_geom_angle_publ_flag
O1 S1 C6 109.24(8) . . ?
O1 S1 C7 106.85(7) . . ?
O2 S1 O1 119.55(7) . . ?
O2 S1 C6 107.72(8) . . ?
O2 S1 C7 105.73(7) . . ?
C6 S1 C7 107.11(7) . . ?
O3 S2 C8 106.96(7) . . ?
O3 S2 C11 108.09(7) . . ?
O4 S2 O3 119.41(8) . . ?
O4 S2 C8 105.58(7) . . ?
O4 S2 C11 108.28(7) . . ?
C11 S2 C8 108.04(7) . . ?
C7 O5 N1 103.46(10) . . ?
C9 N1 O5 100.56(10) . . ?
C10 N1 O5 104.86(11) . . ?
C10 N1 C9 113.10(12) . . ?
C2 C1 C6 118.91(17) . . ?
C3 C2 C1 120.17(18) . . ?
C2 C3 C4 120.84(17) . . ?
C3 C4 C5 120.14(18) . . ?
C6 C5 C4 118.44(17) . . ?
C1 C6 S1 118.98(12) . . ?
C5 C6 S1 119.55(12) . . ?
C5 C6 C1 121.48(15) . . ?
O5 C7 S1 110.23(10) . . ?
O5 C7 C8 107.11(11) . . ?
C8 C7 S1 113.75(10) . . ?
C7 C8 S2 114.94(10) . . ?
C7 C8 C9 101.48(11) . . ?
C9 C8 S2 109.45(10) . . ?
N1 C9 C8 99.62(11) . . ?
N1 C9 C17 111.00(11) . . ?
C17 C9 C8 117.15(12) . . ?
C12 C11 S2 119.09(12) . . ?
C16 C11 S2 119.36(12) . . ?
C16 C11 C12 121.36(14) . . ?
C13 C12 C11 118.99(15) . . ?
C14 C13 C12 120.22(15) . . ?
C13 C14 C15 120.20(16) . . ?
C16 C15 C14 120.49(16) . . ?
C15 C16 C11 118.73(15) . . ?
C18 C17 C9 119.34(14) . . ?
C18 C17 C22 120.51(15) . . ?
C22 C17 C9 120.11(14) . . ?
C17 C18 C19 120.48(18) . . ?
C20 C19 C18 119.47(19) . . ?
C19 C20 C21 120.23(17) . . ?
C20 C21 C22 121.82(18) . . ?
C17 C22 C23 122.73(15) . . ?
C21 C22 C17 117.49(17) . . ?
C21 C22 C23 119.78(17) . . ?

loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion
_geom_torsion_site_symmetry_1
_geom_torsion_site_symmetry_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion_publ_flag
S1 C7 C8 S2 -115.81(10) . . . . ?
S1 C7 C8 C9 126.21(10) . . . . ?
S2 C8 C9 N1 -155.34(9) . . . . ?
S2 C8 C9 C17 84.96(13) . . . . ?
S2 C11 C12 C13 174.65(12) . . . . ?
S2 C11 C16 C15 -174.49(13) . . . . ?
O1 S1 C6 C1 163.13(12) . . . . ?
O1 S1 C6 C5 -16.38(15) . . . . ?
O1 S1 C7 O5 167.76(9) . . . . ?
O1 S1 C7 C8 47.45(12) . . . . ?
O2 S1 C6 C1 31.84(14) . . . . ?
O2 S1 C6 C5 -147.67(13) . . . . ?
O2 S1 C7 O5 -63.88(11) . . . . ?
O2 S1 C7 C8 175.81(10) . . . . ?
O3 S2 C8 C7 -52.77(12) . . . . ?
O3 S2 C8 C9 60.62(11) . . . . ?
O3 S2 C11 C12 -146.23(12) . . . . ?
O3 S2 C11 C16 28.79(14) . . . . ?
O4 S2 C8 C7 179.06(10) . . . . ?
O4 S2 C8 C9 -67.54(11) . . . . ?
O4 S2 C11 C12 -15.54(14) . . . . ?
O4 S2 C11 C16 159.48(12) . . . . ?
O5 N1 C9 C8 50.46(12) . . . . ?
O5 N1 C9 C17 174.57(11) . . . . ?
O5 C7 C8 S2 122.14(11) . . . . ?
O5 C7 C8 C9 4.15(13) . . . . ?
N1 O5 C7 S1 -97.22(10) . . . . ?
N1 O5 C7 C8 27.01(13) . . . . ?
N1 C9 C17 C18 -46.24(18) . . . . ?
N1 C9 C17 C22 131.46(14) . . . . ?
C1 C2 C3 C4 0.6(3) . . . . ?
C2 C1 C6 S1 179.50(13) . . . . ?
C2 C1 C6 C5 -1.0(2) . . . . ?
C2 C3 C4 C5 -1.5(3) . . . . ?
C3 C4 C5 C6 1.1(3) . . . . ?
C4 C5 C6 S1 179.62(13) . . . . ?
C4 C5 C6 C1 0.1(2) . . . . ?
C6 S1 C7 O5 50.80(11) . . . . ?
C6 S1 C7 C8 -69.51(12) . . . . ?
C6 C1 C2 C3 0.7(3) . . . . ?
C7 S1 C6 C1 -81.49(14) . . . . ?
C7 S1 C6 C5 99.00(14) . . . . ?
C7 O5 N1 C9 -49.59(12) . . . . ?
C7 O5 N1 C10 -167.13(12) . . . . ?
C7 C8 C9 N1 -33.47(12) . . . . ?
C7 C8 C9 C17 -153.16(12) . . . . ?
C8 S2 C11 C12 98.35(13) . . . . ?
C8 S2 C11 C16 -86.63(13) . . . . ?
C8 C9 C17 C18 67.21(18) . . . . ?
C8 C9 C17 C22 -115.09(15) . . . . ?
C9 C17 C18 C19 177.62(14) . . . . ?
C9 C17 C22 C21 -178.31(14) . . . . ?
C9 C17 C22 C23 1.0(2) . . . . ?
C10 N1 C9 C8 161.75(12) . . . . ?
C10 N1 C9 C17 -74.13(16) . . . . ?
C11 S2 C8 C7 63.38(12) . . . . ?
C11 S2 C8 C9 176.77(9) . . . . ?
C11 C12 C13 C14 -0.5(2) . . . . ?
C12 C11 C16 C15 0.4(2) . . . . ?
C12 C13 C14 C15 1.1(3) . . . . ?
C13 C14 C15 C16 -0.9(3) . . . . ?
C14 C15 C16 C11 0.2(3) . . . . ?
C16 C11 C12 C13 -0.3(2) . . . . ?
C17 C18 C19 C20 0.4(3) . . . . ?
C18 C17 C22 C21 -0.6(2) . . . . ?
C18 C17 C22 C23 178.68(15) . . . . ?
C18 C19 C20 C21 -0.1(3) . . . . ?
C19 C20 C21 C22 -0.7(3) . . . . ?
C20 C21 C22 C17 1.0(2) . . . . ?
C20 C21 C22 C23 -178.34(16) . . . . ?
C22 C17 C18 C19 -0.1(2) . . . . ?

