# Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry.
# This journal is © The Royal Society of Chemistry 2016

####################################################################### 
# 
# This file contains crystal structure data downloaded from the 
# Cambridge Structural Database (CSD) hosted by the Cambridge 
# Crystallographic Data Centre (CCDC).
# 
# Full information about CCDC data access policies and citation 
# 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 
# this file and to allow appropriate attribution of the data. 
# 
#######################################################################

data_shelxl
_database_code_depnum_ccdc_archive 'CCDC 1447531'
_audit_update_record             
;
2016-01-15 deposited with the CCDC.
2016-03-16 downloaded from the CCDC.
;
_audit_creation_date             2013-10-17
_audit_creation_method           
;
  Olex2 1.2
  (compiled Apr 23 2013 17:54:37, GUI svn.r4466)
;
_chemical_name_common            ?
_chemical_name_systematic        
;
 ? 
;
_chemical_formula_moiety         '0.67(C25 H20 N O S)'
_chemical_formula_sum            'C16.67 H13.33 N0.67 O0.67 S0.67'
_chemical_formula_weight         254.99
_chemical_absolute_configuration unk
_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'

_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_H-M_alt        'P 1 21 1'
_space_group_name_Hall           'P 2yb'
loop_
_space_group_symop_id
_space_group_symop_operation_xyz
1 'x, y, z'
2 '-x, y+1/2, -z'

_cell_length_a                   8.0511(10)
_cell_length_b                   13.583(16)
_cell_length_c                   9.587(11)
_cell_angle_alpha                90.00
_cell_angle_beta                 109.730(19)
_cell_angle_gamma                90.00
_cell_volume                     986.9(16)
_cell_formula_units_Z            3
_cell_measurement_reflns_used    ?
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      ?
_cell_measurement_theta_min      ?
_exptl_absorpt_coefficient_mu    0.179
_exptl_absorpt_correction_T_max  0.9841
_exptl_absorpt_correction_T_min  0.8894
_exptl_absorpt_correction_type   ?
_exptl_absorpt_process_details   ?
_exptl_crystal_colour            ?
_exptl_crystal_density_diffrn    1.287
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       ?
_exptl_crystal_F_000             402
_exptl_crystal_size_max          0.67
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.09
_exptl_special_details           
;
 ? 
;
_diffrn_reflns_av_R_equivalents  0.0594
_diffrn_reflns_av_unetI/netI     0.0808
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            7495
_diffrn_reflns_theta_full        25.40
_diffrn_reflns_theta_max         25.40
_diffrn_reflns_theta_min         3.08
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean ?
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  ?
_diffrn_measurement_method       ?
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_source                   'fine-focus sealed tube'
_reflns_number_gt                2716
_reflns_number_total             3171
_reflns_threshold_expression     >2sigma(I)
_computing_cell_refinement       ?
_computing_data_collection       ?
_computing_data_reduction        ?
_computing_molecular_graphics    
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material  
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_refine_diff_density_max         2.048
_refine_diff_density_min         -0.443
_refine_diff_density_rms         0.090
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.2(2)
_refine_ls_extinction_coef       ?
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         3171
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0952
_refine_ls_R_factor_gt           0.0867
_refine_ls_restrained_S_all      1.035
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     
'calc w=1/[σ²(Fo²)+(0.1396P)²+1.3160P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2299
_refine_ls_wR_factor_ref         0.2389
_refine_special_details          
;
 Refinement of F² against ALL reflections.  The weighted R-factor wR and 
 goodness of fit S are based on F², conventional R-factors R are based 
 on F, with F set to zero for negative F². The threshold expression of 
 F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is 
 not relevant to the choice of reflections for refinement.  R-factors based 
 on F² are statistically about twice as large as those based on F, and R- 
 factors based on ALL data will be even larger. 
;
_olex2_refinement_description    
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C16(H16), C22(H22)
2.b Secondary CH2 refined with riding coordinates:
 C9(H9A,H9B)
2.c Me refined with riding coordinates:
 C23(H23A,H23B,H23C)
2.d Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C7(H7), C8(H8), C11(H11), C12(H12), C13(H13), C14(H14),
 C18(H18), C19(H19), C20(H20), C21(H21), C28(H28)
;
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
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_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_disorder_assembly
_atom_site_disorder_group
S1 S -0.0379(2) 0.48721(13) 0.59525(17) 0.0405(5) Uani 1 1 d . . .
N3 N 0.2740(6) 0.4479(4) 0.8747(5) 0.0250(10) Uani 1 1 d . . .
C4 C -0.3589(8) 0.7573(5) 0.8015(6) 0.0295(13) Uani 1 1 d . . .
H4 H -0.4335 0.8107 0.8054 0.035 Uiso 1 1 calc R . .
C5 C 0.5248(7) 0.4898(5) 1.1081(6) 0.0282(12) Uani 1 1 d . . .
H5 H 0.4640 0.5400 1.1403 0.034 Uiso 1 1 calc R . .
C6 C 0.5286(8) 0.3649(5) 0.9235(7) 0.0312(14) Uani 1 1 d . . .
C7 C -0.2575(8) 0.1705(5) 0.5103(7) 0.0336(15) Uani 1 1 d . . .
H7 H -0.3556 0.1540 0.4254 0.040 Uiso 1 1 calc R . .
C8 C -0.2683(7) 0.5895(5) 0.8549(6) 0.0274(13) Uani 1 1 d . . .
H8 H -0.2803 0.5281 0.8978 0.033 Uiso 1 1 calc R . .
C9 C 0.1570(7) 0.5267(5) 0.8868(7) 0.0328(14) Uani 1 1 d . . .
H9A H 0.2015 0.5903 0.8635 0.039 Uiso 1 1 calc R . .
H9B H 0.1573 0.5299 0.9901 0.039 Uiso 1 1 calc R . .
C10 C 0.4431(7) 0.4371(4) 0.9765(6) 0.0236(12) Uani 1 1 d . . .
C11 C 0.7858(8) 0.3908(6) 1.1384(8) 0.0401(16) Uani 1 1 d . . .
H11 H 0.9040 0.3746 1.1957 0.048 Uiso 1 1 calc R . .
C12 C 0.7033(8) 0.3399(5) 1.0055(8) 0.0377(16) Uani 1 1 d . . .
H12 H 0.7639 0.2902 0.9723 0.045 Uiso 1 1 calc R . .
C13 C -0.3732(7) 0.6662(4) 0.8638(6) 0.0259(13) Uani 1 1 d . . .
H13 H -0.4568 0.6575 0.9129 0.031 Uiso 1 1 calc R . .
C14 C 0.0300(7) 0.2167(6) 0.7586(6) 0.0361(16) Uani 1 1 d . . .
H14 H 0.1282 0.2320 0.8442 0.043 Uiso 1 1 calc R . .
C15 C -0.2067(8) 0.1086(5) 0.6351(7) 0.0320(14) Uani 1 1 d . . .
C16 C 0.0888(8) 0.3731(5) 0.6303(7) 0.0327(14) Uani 1 1 d . . .
H16 H 0.1257 0.3638 0.5415 0.039 Uiso 1 1 calc R . .
C17 C 0.2558(8) 0.3832(5) 0.7568(7) 0.0311(14) Uani 1 1 d . . .
C18 C -0.1279(8) 0.6884(5) 0.7246(7) 0.0344(15) Uani 1 1 d . . .
H18 H -0.0435 0.6963 0.6760 0.041 Uiso 1 1 calc R . .
C19 C -0.0625(8) 0.1330(5) 0.7568(7) 0.0360(15) Uani 1 1 d . . .
H19 H -0.0276 0.0906 0.8405 0.043 Uiso 1 1 calc R . .
C20 C -0.1646(7) 0.2542(5) 0.5126(6) 0.0283(13) Uani 1 1 d . . .
H20 H -0.2002 0.2961 0.4282 0.034 Uiso 1 1 calc R . .
C21 C -0.2334(8) 0.7675(5) 0.7343(7) 0.0374(15) Uani 1 1 d . . .
H21 H -0.2186 0.8294 0.6939 0.045 Uiso 1 1 calc R . .
C22 C -0.0312(8) 0.5109(6) 0.7824(7) 0.0396(16) Uani 1 1 d . . .
H22 H -0.0806 0.4521 0.8175 0.048 Uiso 1 1 calc R . .
C23 C 0.4389(9) 0.2502(5) 0.6888(8) 0.0444(17) Uani 1 1 d . . .
H23A H 0.3561 0.2571 0.5874 0.053 Uiso 1 1 calc R . .
H23B H 0.4216 0.1860 0.7286 0.053 Uiso 1 1 calc R . .
H23C H 0.5601 0.2548 0.6881 0.053 Uiso 1 1 calc R . .
C24 C -0.4549(8) -0.0003(6) 0.5221(8) 0.0470(18) Uani 1 1 d . . .
C25 C -0.1455(7) 0.5989(4) 0.7852(6) 0.0283(14) Uani 1 1 d . . .
C26 C 0.4068(8) 0.3305(5) 0.7839(7) 0.0327(14) Uani 1 1 d . . .
C27 C -0.0158(8) 0.2816(5) 0.6367(7) 0.0326(14) Uani 1 1 d . . .
C28 C 0.6986(8) 0.4652(5) 1.1892(7) 0.0379(16) Uani 1 1 d . . .
H28 H 0.7585 0.4987 1.2791 0.045 Uiso 1 1 calc R . .
O17 O -0.2906(6) 0.0228(4) 0.6437(5) 0.0435(12) Uani 1 1 d . . .


_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 C16 1.822(6) . ?
S1 C22 1.805(7) . ?
N3 C9 1.456(7) . ?
N3 C10 1.389(7) . ?
N3 C17 1.399(8) . ?
C4 H4 0.9500 . ?
C4 C13 1.396(8) . ?
C4 C21 1.377(9) . ?
C5 H5 0.9500 . ?
C5 C10 1.405(8) . ?
C5 C28 1.393(8) . ?
C6 C10 1.390(8) . ?
C6 C12 1.402(9) . ?
C6 C26 1.444(9) . ?
C7 H7 0.9500 . ?
C7 C15 1.406(8) . ?
C7 C20 1.357(9) . ?
C8 H8 0.9500 . ?
C8 C13 1.361(8) . ?
C8 C25 1.373(8) . ?
C9 H9A 0.9900 . ?
C9 H9B 0.9900 . ?
C9 C22 1.523(8) . ?
C11 H11 0.9500 . ?
C11 C12 1.404(10) . ?
C11 C28 1.407(10) . ?
C12 H12 0.9500 . ?
C13 H13 0.9500 . ?
C14 H14 0.9500 . ?
C14 C19 1.356(10) . ?
C14 C27 1.409(9) . ?
C15 C19 1.380(9) . ?
C15 O17 1.364(8) . ?
C16 H16 1.0000 . ?
C16 C17 1.482(8) . ?
C16 C27 1.515(9) . ?
C17 C26 1.358(8) . ?
C18 H18 0.9500 . ?
C18 C21 1.392(9) . ?
C18 C25 1.376(9) . ?
C19 H19 0.9500 . ?
C20 H20 0.9500 . ?
C20 C27 1.424(8) . ?
C21 H21 0.9500 . ?
C22 H22 1.0000 . ?
C22 C25 1.515(9) . ?
C23 H23A 0.9800 . ?
C23 H23B 0.9800 . ?
C23 H23C 0.9800 . ?
C23 C26 1.500(9) . ?
C24 O17 1.472(8) . ?
C28 H28 0.9500 . ?

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
C22 S1 C16 98.1(3) . . ?
C10 N3 C9 121.9(5) . . ?
C10 N3 C17 108.2(5) . . ?
C17 N3 C9 129.2(5) . . ?
C13 C4 H4 121.0 . . ?
C21 C4 H4 121.0 . . ?
C21 C4 C13 117.9(6) . . ?
C10 C5 H5 121.4 . . ?
C28 C5 H5 121.4 . . ?
C28 C5 C10 117.2(6) . . ?
C10 C6 C12 119.5(6) . . ?
C10 C6 C26 107.6(5) . . ?
C12 C6 C26 132.9(6) . . ?
C15 C7 H7 120.4 . . ?
C20 C7 H7 120.4 . . ?
C20 C7 C15 119.2(6) . . ?
C13 C8 H8 119.2 . . ?
C13 C8 C25 121.5(6) . . ?
C25 C8 H8 119.2 . . ?
N3 C9 H9A 109.3 . . ?
N3 C9 H9B 109.3 . . ?
N3 C9 C22 111.8(5) . . ?
H9A C9 H9B 107.9 . . ?
C22 C9 H9A 109.3 . . ?
C22 C9 H9B 109.3 . . ?
N3 C10 C5 128.9(5) . . ?
N3 C10 C6 107.8(5) . . ?
C6 C10 C5 123.2(5) . . ?
C12 C11 H11 119.0 . . ?
C12 C11 C28 121.9(5) . . ?
C28 C11 H11 119.0 . . ?
C6 C12 C11 117.9(6) . . ?
C6 C12 H12 121.0 . . ?
C11 C12 H12 121.0 . . ?
C4 C13 H13 119.7 . . ?
C8 C13 C4 120.6(5) . . ?
C8 C13 H13 119.7 . . ?
C19 C14 H14 119.2 . . ?
C19 C14 C27 121.6(6) . . ?
C27 C14 H14 119.2 . . ?
C19 C15 C7 119.7(6) . . ?
O17 C15 C7 123.7(6) . . ?
O17 C15 C19 116.6(5) . . ?
S1 C16 H16 105.0 . . ?
C17 C16 S1 111.6(5) . . ?
C17 C16 H16 105.0 . . ?
C17 C16 C27 113.9(5) . . ?
C27 C16 S1 114.9(4) . . ?
C27 C16 H16 105.0 . . ?
N3 C17 C16 122.5(5) . . ?
C26 C17 N3 109.5(5) . . ?
C26 C17 C16 127.9(6) . . ?
C21 C18 H18 120.0 . . ?
C25 C18 H18 120.0 . . ?
C25 C18 C21 120.1(6) . . ?
C14 C19 C15 121.0(6) . . ?
C14 C19 H19 119.5 . . ?
C15 C19 H19 119.5 . . ?
C7 C20 H20 118.8 . . ?
C7 C20 C27 122.4(5) . . ?
C27 C20 H20 118.8 . . ?
C4 C21 C18 121.0(6) . . ?
C4 C21 H21 119.5 . . ?
C18 C21 H21 119.5 . . ?
S1 C22 H22 108.1 . . ?
C9 C22 S1 111.6(4) . . ?
C9 C22 H22 108.1 . . ?
C25 C22 S1 110.1(4) . . ?
C25 C22 C9 110.7(5) . . ?
C25 C22 H22 108.1 . . ?
H23A C23 H23B 109.5 . . ?
H23A C23 H23C 109.5 . . ?
H23B C23 H23C 109.5 . . ?
C26 C23 H23A 109.5 . . ?
C26 C23 H23B 109.5 . . ?
C26 C23 H23C 109.5 . . ?
C8 C25 C18 118.8(6) . . ?
C8 C25 C22 118.5(6) . . ?
C18 C25 C22 122.7(6) . . ?
C6 C26 C23 126.6(6) . . ?
C17 C26 C6 106.9(6) . . ?
C17 C26 C23 126.5(6) . . ?
C14 C27 C16 123.6(6) . . ?
C14 C27 C20 116.1(6) . . ?
C20 C27 C16 120.2(5) . . ?
C5 C28 C11 120.2(6) . . ?
C5 C28 H28 119.9 . . ?
C11 C28 H28 119.9 . . ?
C15 O17 C24 117.7(5) . . ?

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 C16 C17 N3 29.3(8) . . . . ?
S1 C16 C17 C26 -155.2(6) . . . . ?
S1 C16 C27 C14 -124.2(5) . . . . ?
S1 C16 C27 C20 58.9(7) . . . . ?
S1 C22 C25 C8 128.9(5) . . . . ?
S1 C22 C25 C18 -53.0(7) . . . . ?
N3 C9 C22 S1 -51.0(7) . . . . ?
N3 C9 C22 C25 -174.0(5) . . . . ?
N3 C17 C26 C6 -1.6(7) . . . . ?
N3 C17 C26 C23 177.0(6) . . . . ?
C7 C15 C19 C14 0.8(9) . . . . ?
C7 C15 O17 C24 -7.1(9) . . . . ?
C7 C20 C27 C14 -0.2(9) . . . . ?
C7 C20 C27 C16 176.9(5) . . . . ?
C9 N3 C10 C5 5.6(9) . . . . ?
C9 N3 C10 C6 -171.8(5) . . . . ?
C9 N3 C17 C16 -12.2(10) . . . . ?
C9 N3 C17 C26 171.5(6) . . . . ?
C9 C22 C25 C8 -107.3(6) . . . . ?
C9 C22 C25 C18 70.8(7) . . . . ?
C10 N3 C9 C22 -168.4(5) . . . . ?
C10 N3 C17 C16 177.9(6) . . . . ?
C10 N3 C17 C26 1.6(7) . . . . ?
C10 C5 C28 C11 0.4(9) . . . . ?
C10 C6 C12 C11 -0.9(9) . . . . ?
C10 C6 C26 C17 0.9(7) . . . . ?
C10 C6 C26 C23 -177.6(6) . . . . ?
C12 C6 C10 N3 179.6(5) . . . . ?
C12 C6 C10 C5 2.0(9) . . . . ?
C12 C6 C26 C17 -178.5(7) . . . . ?
C12 C6 C26 C23 3.0(11) . . . . ?
C12 C11 C28 C5 0.6(10) . . . . ?
C13 C4 C21 C18 2.0(9) . . . . ?
C13 C8 C25 C18 0.6(8) . . . . ?
C13 C8 C25 C22 178.8(5) . . . . ?
C15 C7 C20 C27 0.5(9) . . . . ?
C16 S1 C22 C9 62.6(6) . . . . ?
C16 S1 C22 C25 -174.1(5) . . . . ?
C16 C17 C26 C6 -177.5(6) . . . . ?
C16 C17 C26 C23 1.0(11) . . . . ?
C17 N3 C9 C22 22.9(9) . . . . ?
C17 N3 C10 C5 176.4(6) . . . . ?
C17 N3 C10 C6 -1.0(6) . . . . ?
C17 C16 C27 C14 6.5(8) . . . . ?
C17 C16 C27 C20 -170.4(5) . . . . ?
C19 C14 C27 C16 -176.8(6) . . . . ?
C19 C14 C27 C20 0.2(9) . . . . ?
C19 C15 O17 C24 174.0(6) . . . . ?
C20 C7 C15 C19 -0.8(9) . . . . ?
C20 C7 C15 O17 -179.7(6) . . . . ?
C21 C4 C13 C8 -1.4(8) . . . . ?
C21 C18 C25 C8 0.0(9) . . . . ?
C21 C18 C25 C22 -178.2(5) . . . . ?
C22 S1 C16 C17 -49.6(5) . . . . ?
C22 S1 C16 C27 82.1(5) . . . . ?
C25 C8 C13 C4 0.1(9) . . . . ?
C25 C18 C21 C4 -1.3(9) . . . . ?
C26 C6 C10 N3 0.1(6) . . . . ?
C26 C6 C10 C5 -177.5(5) . . . . ?
C26 C6 C12 C11 178.4(7) . . . . ?
C27 C14 C19 C15 -0.5(10) . . . . ?
C27 C16 C17 N3 -102.9(7) . . . . ?
C27 C16 C17 C26 72.6(8) . . . . ?
C28 C5 C10 N3 -178.7(6) . . . . ?
C28 C5 C10 C6 -1.7(9) . . . . ?
C28 C11 C12 C6 -0.4(10) . . . . ?
O17 C15 C19 C14 179.8(6) . . . . ?

