# Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry.
# This journal is © The Royal Society of Chemistry 2019

####################################################################### 
# 
# 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_s180628a
_database_code_depnum_ccdc_archive 'CCDC 1852858'
_audit_update_record             
;
2018-07-02 deposited with the CCDC.
2019-01-31 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-2018/3
_shelx_SHELXL_version_number     2018/3
_chemical_name_systematic        ?
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C25 H21 N O3'
_chemical_formula_weight         383.43

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'

_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_H-M_alt        'P 21/c'
_space_group_name_Hall           '-P 2ybc'

_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.
;

loop_
_space_group_symop_operation_xyz
'x, y, z'
'-x, y+1/2, -z+1/2'
'-x, -y, -z'
'x, -y-1/2, z-1/2'

_cell_length_a                   11.065
_cell_length_b                   11.521
_cell_length_c                   15.832
_cell_angle_alpha                90
_cell_angle_beta                 97.78
_cell_angle_gamma                90
_cell_volume                     1999.6
_cell_formula_units_Z            4
_cell_measurement_temperature    293(2)
_cell_measurement_reflns_used    9630
_cell_measurement_theta_min      1.7677
_cell_measurement_theta_max      34.8822

_exptl_crystal_description       BLOCK
_exptl_crystal_colour            YELLOW
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.274
_exptl_crystal_F_000             808
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.4000
_exptl_crystal_size_mid          0.3500
_exptl_crystal_size_min          0.3000
_exptl_absorpt_coefficient_mu    0.084
_shelx_estimated_absorpt_T_min   ?
_shelx_estimated_absorpt_T_max   ?
_exptl_absorpt_correction_type   ?
_exptl_absorpt_correction_T_min  ?
_exptl_absorpt_correction_T_max  ?
_exptl_absorpt_process_details   ?
_exptl_absorpt_special_details   ?
_diffrn_ambient_temperature      293(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_source                   ?
_diffrn_measurement_device       
;
Saturn724+ (2x2 bin mode)
;
_diffrn_measurement_method       ?
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            13551
_diffrn_reflns_av_unetI/netI     0.0483
_diffrn_reflns_av_R_equivalents  0.0255
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_theta_min         2.193
_diffrn_reflns_theta_max         34.881
_diffrn_reflns_theta_full        25.242
_diffrn_measured_fraction_theta_max 0.880
_diffrn_measured_fraction_theta_full 0.991
_diffrn_reflns_Laue_measured_fraction_max 0.880
_diffrn_reflns_Laue_measured_fraction_full 0.991
_diffrn_reflns_point_group_measured_fraction_max 0.880
_diffrn_reflns_point_group_measured_fraction_full 0.991
_reflns_number_total             7680
_reflns_number_gt                5236
_reflns_threshold_expression     'I > 2σ(I)'
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_max     .
_reflns_Friedel_fraction_full    .

_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.
;

_computing_data_collection       ?
_computing_cell_refinement       ?
_computing_data_reduction        ?
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_molecular_graphics    ?
_computing_publication_material  ?
_refine_special_details          ?
_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'w=1/[σ²(Fo²)+(0.0436P)²+0.7411P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary     ?
_atom_sites_solution_secondary   ?
_atom_sites_solution_hydrogens   geom
_refine_ls_hydrogen_treatment    constr
_refine_ls_extinction_method     none
_refine_ls_extinction_coef       .
_refine_ls_number_reflns         7680
_refine_ls_number_parameters     264
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1476
_refine_ls_R_factor_gt           0.1073
_refine_ls_wR_factor_ref         0.2016
_refine_ls_wR_factor_gt          0.1803
_refine_ls_goodness_of_fit_ref   1.185
_refine_ls_restrained_S_all      1.185
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000

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
O1 O 0.21425(13) -0.18045(12) 0.35550(10) 0.0529(4) Uani 1 1 d . . . . .
O2 O 0.40684(15) -0.15965(14) 0.41771(10) 0.0592(4) Uani 1 1 d . . . . .
O3 O -0.0692(2) 0.1097(2) 0.40058(16) 0.1074(8) Uani 1 1 d . . . . .
N1 N 0.25383(17) 0.23314(15) 0.15615(13) 0.0559(5) Uani 1 1 d . . . . .
C1 C 0.2613(2) 0.14688(19) 0.09608(15) 0.0534(5) Uani 1 1 d . . . . .
C2 C 0.19812(19) 0.04873(18) 0.11712(13) 0.0474(5) Uani 1 1 d . . . . .
C3 C 0.1943(2) -0.0494(2) 0.06731(16) 0.0643(6) Uani 1 1 d . . . . .
H3 H 0.152024 -0.114794 0.081360 0.077 Uiso 1 1 calc R U . . .
C4 C 0.2547(3) -0.0495(3) -0.00455(17) 0.0837(9) Uani 1 1 d . . . . .
H4 H 0.252391 -0.115015 -0.039038 0.100 Uiso 1 1 calc R U . . .
C5 C 0.3175(3) 0.0476(3) -0.02420(19) 0.0907(10) Uani 1 1 d . . . . .
H5 H 0.357969 0.046285 -0.072009 0.109 Uiso 1 1 calc R U . . .
C6 C 0.3224(3) 0.1469(3) 0.02495(18) 0.0771(8) Uani 1 1 d . . . . .
H6 H 0.365341 0.211941 0.010866 0.093 Uiso 1 1 calc R U . . .
C7 C 0.19155(18) 0.19486(17) 0.22107(14) 0.0468(5) Uani 1 1 d . . . . .
C8 C 0.1727(2) 0.2525(2) 0.29189(16) 0.0592(6) Uani 1 1 d . . . . .
H8 H 0.210488 0.324318 0.301444 0.071 Uiso 1 1 calc R U . . .
C9 C 0.0999(3) 0.2129(2) 0.35340(17) 0.0686(7) Uani 1 1 d . . . . .
H9 H 0.121701 0.238633 0.409053 0.082 Uiso 1 1 calc R U . . .
C10 C 0.0025(2) 0.1418(2) 0.33943(18) 0.0692(7) Uani 1 1 d . . . . .
C11 C -0.0502(2) 0.0981(2) 0.25687(19) 0.0645(7) Uani 1 1 d . . . . .
H11 H -0.134328 0.088182 0.247905 0.077 Uiso 1 1 calc R U . . .
C12 C 0.01070(19) 0.07074(19) 0.19246(16) 0.0538(5) Uani 1 1 d . . . . .
H12 H -0.033319 0.051216 0.140135 0.065 Uiso 1 1 calc R U . . .
C13 C 0.14897(17) 0.07020(16) 0.20123(13) 0.0416(4) Uani 1 1 d . . . . .
C14 C 0.31677(16) -0.02132(15) 0.31167(11) 0.0381(4) Uani 1 1 d . . . . .
C15 C 0.32342(18) -0.12385(17) 0.36793(13) 0.0440(4) Uani 1 1 d . . . . .
C16 C 0.13189(19) -0.11712(18) 0.29418(15) 0.0503(5) Uani 1 1 d . . . . .
H16A H 0.061356 -0.090991 0.319234 0.060 Uiso 1 1 calc R U . . .
H16B H 0.104319 -0.165261 0.245072 0.060 Uiso 1 1 calc R U . . .
C17 C 0.20386(17) -0.01567(16) 0.26894(12) 0.0390(4) Uani 1 1 d . . . . .
C18 C 0.42514(16) 0.05356(16) 0.30857(12) 0.0397(4) Uani 1 1 d . . . . .
C19 C 0.47961(18) 0.06172(19) 0.23488(13) 0.0470(5) Uani 1 1 d . . . . .
H19 H 0.448371 0.019644 0.186700 0.056 Uiso 1 1 calc R U . . .
C20 C 0.58022(19) 0.1322(2) 0.23292(15) 0.0561(6) Uani 1 1 d . . . . .
H20 H 0.616037 0.137879 0.183219 0.067 Uiso 1 1 calc R U . . .
C21 C 0.6276(2) 0.1940(2) 0.30382(17) 0.0635(6) Uani 1 1 d . . . . .
H21 H 0.694452 0.242300 0.301857 0.076 Uiso 1 1 calc R U . . .
C22 C 0.5758(2) 0.1843(2) 0.37806(16) 0.0673(7) Uani 1 1 d . . . . .
H22 H 0.608322 0.225661 0.426298 0.081 Uiso 1 1 calc R U . . .
C23 C 0.4758(2) 0.1133(2) 0.38085(14) 0.0542(5) Uani 1 1 d . . . . .
H23 H 0.442298 0.105528 0.431359 0.065 Uiso 1 1 calc R U . . .
C24 C 0.3077(3) 0.3478(2) 0.1548(2) 0.0932(10) Uani 1 1 d . . . . .
H24A H 0.246659 0.405521 0.160255 0.140 Uiso 1 1 calc R U . . .
H24B H 0.339586 0.358832 0.101891 0.140 Uiso 1 1 calc R U . . .
H24C H 0.372595 0.355030 0.201321 0.140 Uiso 1 1 calc R U . . .
C25 C -0.0358(5) 0.1497(4) 0.4860(3) 0.148(2) Uani 1 1 d . . . . .
H25A H -0.029526 0.232835 0.486176 0.222 Uiso 1 1 calc R U . . .
H25B H 0.041447 0.116777 0.508931 0.222 Uiso 1 1 calc R U . . .
H25C H -0.096742 0.126409 0.520327 0.222 Uiso 1 1 calc R U . . .


_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
O1 C15 1.363(2) . ?
O1 C16 1.437(2) . ?
O2 C15 1.203(2) . ?
O3 C10 1.383(3) . ?
O3 C25 1.430(5) . ?
N1 C7 1.385(3) . ?
N1 C1 1.386(3) . ?
N1 C24 1.451(3) . ?
C1 C6 1.390(3) . ?
C1 C2 1.393(3) . ?
C2 C3 1.375(3) . ?
C2 C13 1.525(3) . ?
C3 C4 1.395(4) . ?
C3 H3 0.9300 . ?
C4 C5 1.375(5) . ?
C4 H4 0.9300 . ?
C5 C6 1.381(4) . ?
C5 H5 0.9300 . ?
C6 H6 0.9300 . ?
C7 C8 1.343(3) . ?
C7 C13 1.531(3) . ?
C8 C9 1.421(4) . ?
C8 H8 0.9300 . ?
C9 C10 1.348(4) . ?
C9 H9 0.9300 . ?
C10 C11 1.447(4) . ?
C11 C12 1.334(3) . ?
C11 H11 0.9300 . ?
C12 C13 1.517(3) . ?
C12 H12 0.9300 . ?
C13 C17 1.523(3) . ?
C14 C17 1.339(2) . ?
C14 C15 1.475(3) . ?
C14 C18 1.483(3) . ?
C16 C17 1.499(3) . ?
C16 H16A 0.9700 . ?
C16 H16B 0.9700 . ?
C18 C23 1.387(3) . ?
C18 C19 1.387(3) . ?
C19 C20 1.382(3) . ?
C19 H19 0.9300 . ?
C20 C21 1.371(3) . ?
C20 H20 0.9300 . ?
C21 C22 1.380(3) . ?
C21 H21 0.9300 . ?
C22 C23 1.382(3) . ?
C22 H22 0.9300 . ?
C23 H23 0.9300 . ?
C24 H24A 0.9600 . ?
C24 H24B 0.9600 . ?
C24 H24C 0.9600 . ?
C25 H25A 0.9600 . ?
C25 H25B 0.9600 . ?
C25 H25C 0.9600 . ?

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
C15 O1 C16 108.85(15) . . ?
C10 O3 C25 118.5(3) . . ?
C7 N1 C1 111.28(17) . . ?
C7 N1 C24 123.2(2) . . ?
C1 N1 C24 125.5(2) . . ?
N1 C1 C6 129.5(2) . . ?
N1 C1 C2 109.8(2) . . ?
C6 C1 C2 120.6(2) . . ?
C3 C2 C1 120.5(2) . . ?
C3 C2 C13 130.3(2) . . ?
C1 C2 C13 109.08(18) . . ?
C2 C3 C4 119.2(3) . . ?
C2 C3 H3 120.4 . . ?
C4 C3 H3 120.4 . . ?
C5 C4 C3 119.8(3) . . ?
C5 C4 H4 120.1 . . ?
C3 C4 H4 120.1 . . ?
C4 C5 C6 121.9(3) . . ?
C4 C5 H5 119.0 . . ?
C6 C5 H5 119.0 . . ?
C5 C6 C1 118.0(3) . . ?
C5 C6 H6 121.0 . . ?
C1 C6 H6 121.0 . . ?
C8 C7 N1 127.7(2) . . ?
C8 C7 C13 123.8(2) . . ?
N1 C7 C13 108.47(18) . . ?
C7 C8 C9 125.4(2) . . ?
C7 C8 H8 117.3 . . ?
C9 C8 H8 117.3 . . ?
C10 C9 C8 126.7(3) . . ?
C10 C9 H9 116.6 . . ?
C8 C9 H9 116.6 . . ?
C9 C10 O3 124.7(3) . . ?
C9 C10 C11 125.1(3) . . ?
O3 C10 C11 109.9(3) . . ?
C12 C11 C10 126.1(2) . . ?
C12 C11 H11 116.9 . . ?
C10 C11 H11 116.9 . . ?
C11 C12 C13 122.6(2) . . ?
C11 C12 H12 118.7 . . ?
C13 C12 H12 118.7 . . ?
C12 C13 C17 111.59(16) . . ?
C12 C13 C2 113.27(17) . . ?
C17 C13 C2 110.72(15) . . ?
C12 C13 C7 107.07(16) . . ?
C17 C13 C7 112.49(15) . . ?
C2 C13 C7 101.25(16) . . ?
C17 C14 C15 108.10(17) . . ?
C17 C14 C18 131.15(17) . . ?
C15 C14 C18 120.74(16) . . ?
O2 C15 O1 121.13(19) . . ?
O2 C15 C14 129.90(19) . . ?
O1 C15 C14 108.97(16) . . ?
O1 C16 C17 105.35(15) . . ?
O1 C16 H16A 110.7 . . ?
C17 C16 H16A 110.7 . . ?
O1 C16 H16B 110.7 . . ?
C17 C16 H16B 110.7 . . ?
H16A C16 H16B 108.8 . . ?
C14 C17 C16 108.69(17) . . ?
C14 C17 C13 130.00(17) . . ?
C16 C17 C13 121.23(16) . . ?
C23 C18 C19 119.17(18) . . ?
C23 C18 C14 119.96(17) . . ?
C19 C18 C14 120.83(17) . . ?
C20 C19 C18 120.1(2) . . ?
C20 C19 H19 119.9 . . ?
C18 C19 H19 119.9 . . ?
C21 C20 C19 120.4(2) . . ?
C21 C20 H20 119.8 . . ?
C19 C20 H20 119.8 . . ?
C20 C21 C22 119.9(2) . . ?
C20 C21 H21 120.0 . . ?
C22 C21 H21 120.0 . . ?
C21 C22 C23 120.1(2) . . ?
C21 C22 H22 120.0 . . ?
C23 C22 H22 120.0 . . ?
C22 C23 C18 120.2(2) . . ?
C22 C23 H23 119.9 . . ?
C18 C23 H23 119.9 . . ?
N1 C24 H24A 109.5 . . ?
N1 C24 H24B 109.5 . . ?
H24A C24 H24B 109.5 . . ?
N1 C24 H24C 109.5 . . ?
H24A C24 H24C 109.5 . . ?
H24B C24 H24C 109.5 . . ?
O3 C25 H25A 109.5 . . ?
O3 C25 H25B 109.5 . . ?
H25A C25 H25B 109.5 . . ?
O3 C25 H25C 109.5 . . ?
H25A C25 H25C 109.5 . . ?
H25B C25 H25C 109.5 . . ?

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
C7 N1 C1 C6 -175.2(2) . . . . ?
C24 N1 C1 C6 2.4(4) . . . . ?
C7 N1 C1 C2 3.0(2) . . . . ?
C24 N1 C1 C2 -179.5(2) . . . . ?
N1 C1 C2 C3 -179.0(2) . . . . ?
C6 C1 C2 C3 -0.6(3) . . . . ?
N1 C1 C2 C13 -2.8(2) . . . . ?
C6 C1 C2 C13 175.6(2) . . . . ?
C1 C2 C3 C4 0.1(3) . . . . ?
C13 C2 C3 C4 -175.2(2) . . . . ?
C2 C3 C4 C5 0.5(4) . . . . ?
C3 C4 C5 C6 -0.5(5) . . . . ?
C4 C5 C6 C1 0.0(5) . . . . ?
N1 C1 C6 C5 178.6(3) . . . . ?
C2 C1 C6 C5 0.6(4) . . . . ?
C1 N1 C7 C8 176.1(2) . . . . ?
C24 N1 C7 C8 -1.5(4) . . . . ?
C1 N1 C7 C13 -1.9(2) . . . . ?
C24 N1 C7 C13 -179.5(2) . . . . ?
N1 C7 C8 C9 174.7(2) . . . . ?
C13 C7 C8 C9 -7.5(3) . . . . ?
C7 C8 C9 C10 -28.7(4) . . . . ?
C8 C9 C10 O3 -176.9(2) . . . . ?
C8 C9 C10 C11 -3.9(4) . . . . ?
C25 O3 C10 C9 -3.0(4) . . . . ?
C25 O3 C10 C11 -176.9(3) . . . . ?
C9 C10 C11 C12 34.5(4) . . . . ?
O3 C10 C11 C12 -151.7(2) . . . . ?
C10 C11 C12 C13 6.8(4) . . . . ?
C11 C12 C13 C17 60.3(3) . . . . ?
C11 C12 C13 C2 -173.9(2) . . . . ?
C11 C12 C13 C7 -63.2(3) . . . . ?
C3 C2 C13 C12 -68.5(3) . . . . ?
C1 C2 C13 C12 115.81(19) . . . . ?
C3 C2 C13 C17 57.7(3) . . . . ?
C1 C2 C13 C17 -117.96(18) . . . . ?
C3 C2 C13 C7 177.2(2) . . . . ?
C1 C2 C13 C7 1.5(2) . . . . ?
C8 C7 C13 C12 63.2(3) . . . . ?
N1 C7 C13 C12 -118.66(19) . . . . ?
C8 C7 C13 C17 -59.7(3) . . . . ?
N1 C7 C13 C17 118.40(18) . . . . ?
C8 C7 C13 C2 -177.9(2) . . . . ?
N1 C7 C13 C2 0.2(2) . . . . ?
C16 O1 C15 O2 178.92(19) . . . . ?
C16 O1 C15 C14 -1.8(2) . . . . ?
C17 C14 C15 O2 -178.8(2) . . . . ?
C18 C14 C15 O2 2.2(3) . . . . ?
C17 C14 C15 O1 2.1(2) . . . . ?
C18 C14 C15 O1 -176.91(16) . . . . ?
C15 O1 C16 C17 1.0(2) . . . . ?
C15 C14 C17 C16 -1.4(2) . . . . ?
C18 C14 C17 C16 177.44(19) . . . . ?
C15 C14 C17 C13 -178.05(18) . . . . ?
C18 C14 C17 C13 0.8(3) . . . . ?
O1 C16 C17 C14 0.3(2) . . . . ?
O1 C16 C17 C13 177.32(16) . . . . ?
C12 C13 C17 C14 -160.1(2) . . . . ?
C2 C13 C17 C14 72.7(2) . . . . ?
C7 C13 C17 C14 -39.8(3) . . . . ?
C12 C13 C17 C16 23.6(3) . . . . ?
C2 C13 C17 C16 -103.6(2) . . . . ?
C7 C13 C17 C16 143.92(19) . . . . ?
C17 C14 C18 C23 118.3(2) . . . . ?
C15 C14 C18 C23 -63.0(3) . . . . ?
C17 C14 C18 C19 -64.0(3) . . . . ?
C15 C14 C18 C19 114.7(2) . . . . ?
C23 C18 C19 C20 -2.5(3) . . . . ?
C14 C18 C19 C20 179.73(19) . . . . ?
C18 C19 C20 C21 0.5(3) . . . . ?
C19 C20 C21 C22 1.1(4) . . . . ?
C20 C21 C22 C23 -0.5(4) . . . . ?
C21 C22 C23 C18 -1.5(4) . . . . ?
C19 C18 C23 C22 3.0(3) . . . . ?
C14 C18 C23 C22 -179.2(2) . . . . ?

_refine_diff_density_max         0.207
_refine_diff_density_min         -0.196
_refine_diff_density_rms         0.044



