# Electronic Supplementary Material (ESI) for Organic Chemistry Frontiers.
# This journal is © the Partner Organisations 2017

####################################################################### 
# 
# 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_3g
_database_code_depnum_ccdc_archive 'CCDC 1411623'
_audit_update_record             
;
2015-07-09 deposited with the CCDC.
2017-07-18 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-2013
_chemical_name_systematic        
;
 ?
;
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         'C19 H15 N3 O4'
_chemical_formula_sum            'C19 H15 N3 O4'
_chemical_formula_weight         349.34

loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0181 0.0091 '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 0.0311 0.0180 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0492 0.0322 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_space_group_crystal_system      orthorhombic
_space_group_IT_number           29
_space_group_name_H-M_alt        'P c a 21'
_space_group_name_Hall           'P 2c -2ac'

_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, z+1/2'
'-x+1/2, y, z+1/2'
'x+1/2, -y, z'

_cell_length_a                   16.2553(2)
_cell_length_b                   8.31160(10)
_cell_length_c                   24.8996(4)
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_volume                     3364.12(8)
_cell_formula_units_Z            8
_cell_measurement_temperature    295(2)
_cell_measurement_reflns_used    1831
_cell_measurement_theta_min      6.44
_cell_measurement_theta_max      45.32

_exptl_crystal_description       prism
_exptl_crystal_colour            colorless
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.379
_exptl_crystal_F_000             1456
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          .18
_exptl_crystal_size_mid          .14
_exptl_crystal_size_min          .14
_exptl_absorpt_coefficient_mu    0.821
_shelx_estimated_absorpt_T_min   ?
_shelx_estimated_absorpt_T_max   ?
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   
;
[c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;

_exptl_absorpt_correction_T_min  0.4379
_exptl_absorpt_correction_T_max  0.8250


_exptl_special_details           
;
 ?
;
_diffrn_detector                 Pilatus100K
_diffrn_measurement_device_type  STOE
_diffrn_detector_type            STOE
_diffrn_detector_area_resol_mean 5.81
_diffrn_source                   'Cu GeniX 3D'
_diffrn_source_voltage           50
_diffrn_source_current           0.600
_diffrn_source_power             0.030
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54186
_diffrn_radiation_monochromator  none
_diffrn_radiation_polarisn_norm  0
_diffrn_radiation_collimation    'focusing mirrors'
_diffrn_measurement_method       'rotation method'
_diffrn_ambient_temperature      295(2)

_diffrn_reflns_number            11627
_diffrn_reflns_av_unetI/netI     0.0446
_diffrn_reflns_av_R_equivalents  0.0411
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_theta_min         5.322
_diffrn_reflns_theta_max         66.403
_diffrn_reflns_theta_full        66.403
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measured_fraction_theta_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_point_group_measured_fraction_full 0.999
_reflns_number_total             5873
_reflns_number_gt                3832
_reflns_threshold_expression     'I > 2σ(I)'
_reflns_Friedel_coverage         0.987
_reflns_Friedel_fraction_max     0.987
_reflns_Friedel_fraction_full    0.987

_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       'STOE X-AREA'
_computing_cell_refinement       'STOE X-AREA'
_computing_data_reduction        'STOE X-RED'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_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)+(0.0975P)²] 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_abs_structure_details 
;
 Classical Flack method preferred over Parsons because s.u. lower.
;
_refine_ls_abs_structure_Flack   0.5(5)
_chemical_absolute_configuration ?
_refine_ls_number_reflns         5873
_refine_ls_number_parameters     473
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0780
_refine_ls_R_factor_gt           0.0593
_refine_ls_wR_factor_ref         0.1484
_refine_ls_wR_factor_gt          0.1415
_refine_ls_goodness_of_fit_ref   0.893
_refine_ls_restrained_S_all      0.893
_refine_ls_shift/su_max          0.005
_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 0.1828(3) 0.3117(5) 0.06316(17) 0.0483(10) Uani 1 1 d . . . . .
O2 O 0.2158(3) -0.0186(6) 0.0527(3) 0.0587(17) Uani 1 1 d . . . . .
O3 O 0.0082(3) 0.3508(5) 0.0503(2) 0.0697(15) Uani 1 1 d . . . . .
O4 O 0.1945(3) 0.1033(6) 0.1681(2) 0.0635(13) Uani 1 1 d . . . . .
N1 N 0.1236(3) 0.1908(6) 0.0611(2) 0.0473(13) Uani 1 1 d . . . . .
N2 N 0.3422(3) 0.3872(6) 0.1330(2) 0.0505(13) Uani 1 1 d . . . . .
N3 N 0.3173(3) 0.2359(6) 0.1538(2) 0.0460(12) Uani 1 1 d . . . . .
C2 C 0.0413(5) 0.2218(9) 0.0501(4) 0.048(2) Uani 1 1 d . . . . .
C3 C 0.0039(4) 0.0599(7) 0.0442(3) 0.0412(15) Uani 1 1 d . . . . .
C4 C 0.0672(4) -0.0539(8) 0.0450(2) 0.0397(14) Uani 1 1 d . . . . .
C5 C 0.1464(5) 0.0278(8) 0.0526(4) 0.0479(19) Uani 1 1 d . . . . .
C6 C -0.0774(5) 0.0126(8) 0.0368(4) 0.045(2) Uani 1 1 d . . . . .
H6 H -0.1195 0.0882 0.0349 0.054 Uiso 1 1 calc . U . . .
C7 C -0.0938(4) -0.1495(8) 0.0324(3) 0.0462(15) Uani 1 1 d . . . . .
H7 H -0.1479 -0.1838 0.0289 0.055 Uiso 1 1 calc . U . . .
C8 C -0.0308(4) -0.2626(8) 0.0332(3) 0.0478(16) Uani 1 1 d . . . . .
H8 H -0.0435 -0.3711 0.0294 0.057 Uiso 1 1 calc . U . . .
C9 C 0.0497(4) -0.2172(8) 0.0395(3) 0.0417(17) Uani 1 1 d . . . . .
H9 H 0.0916 -0.2935 0.0401 0.050 Uiso 1 1 calc . U . . .
C10 C 0.2012(4) 0.3581(7) 0.1190(3) 0.0457(15) Uani 1 1 d . . . . .
C11 C 0.2781(4) 0.4620(9) 0.1134(3) 0.0455(16) Uani 1 1 d . . . . .
C12 C 0.2346(4) 0.2131(7) 0.1499(3) 0.0473(15) Uani 1 1 d . . . . .
C13 C 0.1307(4) 0.4418(9) 0.1458(3) 0.0573(17) Uani 1 1 d . . . . .
H13A H 0.1115 0.5277 0.1232 0.086 Uiso 1 1 calc R U . . .
H13B H 0.1485 0.4850 0.1796 0.086 Uiso 1 1 calc R U . . .
H13C H 0.0869 0.3665 0.1517 0.086 Uiso 1 1 calc R U . . .
C14 C 0.2840(5) 0.6189(9) 0.0873(4) 0.071(2) Uani 1 1 d . . . . .
H14A H 0.3397 0.6565 0.0889 0.106 Uiso 1 1 calc R U . . .
H14B H 0.2486 0.6940 0.1053 0.106 Uiso 1 1 calc R U . . .
H14C H 0.2675 0.6092 0.0504 0.106 Uiso 1 1 calc R U . . .
C15 C 0.3794(4) 0.1281(9) 0.1727(3) 0.0488(17) Uani 1 1 d . . . . .
C16 C 0.3625(6) -0.0320(12) 0.1797(4) 0.060(2) Uani 1 1 d . . . . .
H16 H 0.3096 -0.0706 0.1739 0.072 Uiso 1 1 calc . U . . .
C17 C 0.4244(7) -0.1360(11) 0.1954(4) 0.076(3) Uani 1 1 d . . . . .
H17 H 0.4141 -0.2457 0.1985 0.091 Uiso 1 1 calc . U . . .
C18 C 0.5030(8) -0.0742(14) 0.2067(4) 0.080(3) Uani 1 1 d . . . . .
H18 H 0.5448 -0.1432 0.2177 0.096 Uiso 1 1 calc . U . . .
C19 C 0.5177(6) 0.0805(15) 0.2019(4) 0.081(3) Uani 1 1 d . . . . .
H19 H 0.5698 0.1198 0.2101 0.098 Uiso 1 1 calc . U . . .
C20 C 0.4562(5) 0.1883(11) 0.1845(4) 0.066(2) Uani 1 1 d . . . . .
H20 H 0.4673 0.2976 0.1812 0.079 Uiso 1 1 calc . U . . .
O1A O 0.4263(3) 0.1922(5) 0.41380(18) 0.0479(10) Uani 1 1 d . . . . .
O2A O 0.4603(4) 0.5226(6) 0.4247(3) 0.0611(18) Uani 1 1 d . . . . .
O3A O 0.2532(3) 0.1516(5) 0.4275(2) 0.0684(14) Uani 1 1 d . . . . .
O4A O 0.4417(3) 0.4068(6) 0.3105(2) 0.0667(14) Uani 1 1 d . . . . .
N1A N 0.3675(3) 0.3130(5) 0.4162(2) 0.0460(12) Uani 1 1 d . . . . .
N2A N 0.5861(3) 0.1137(6) 0.3433(2) 0.0494(13) Uani 1 1 d . . . . .
N3A N 0.5629(3) 0.2661(6) 0.3233(2) 0.0481(12) Uani 1 1 d . . . . .
C2A C 0.2854(4) 0.2821(8) 0.4259(3) 0.0403(18) Uani 1 1 d . . . . .
C3A C 0.2481(4) 0.4459(8) 0.4334(2) 0.0410(13) Uani 1 1 d . . . . .
C4A C 0.3106(4) 0.5574(8) 0.4330(3) 0.0401(14) Uani 1 1 d . . . . .
C5A C 0.3915(5) 0.4758(8) 0.4244(4) 0.0407(18) Uani 1 1 d . . . . .
C6A C 0.1685(5) 0.4901(7) 0.4380(4) 0.039(2) Uani 1 1 d . . . . .
H6A H 0.1268 0.4135 0.4367 0.047 Uiso 1 1 calc . U . . .
C7A C 0.1500(4) 0.6510(8) 0.4447(3) 0.0464(15) Uani 1 1 d . . . . .
H7A H 0.0957 0.6828 0.4500 0.056 Uiso 1 1 calc . U . . .
C8A C 0.2120(4) 0.7653(7) 0.4435(3) 0.0460(15) Uani 1 1 d . . . . .
H8A H 0.1993 0.8737 0.4476 0.055 Uiso 1 1 calc . U . . .
C9A C 0.2929(4) 0.7182(8) 0.4363(3) 0.0427(18) Uani 1 1 d . . . . .
H9A H 0.3346 0.7944 0.4336 0.051 Uiso 1 1 calc . U . . .
C10A C 0.4465(4) 0.1476(7) 0.3581(2) 0.0446(15) Uani 1 1 d . . . . .
C11A C 0.5228(4) 0.0496(9) 0.3636(3) 0.0452(16) Uani 1 1 d . . . . .
C12A C 0.4811(4) 0.2935(7) 0.3281(3) 0.0468(15) Uani 1 1 d . . . . .
C13A C 0.3742(4) 0.0696(9) 0.3298(3) 0.0605(18) Uani 1 1 d . . . . .
H13D H 0.3576 -0.0246 0.3493 0.091 Uiso 1 1 calc R U . . .
H13E H 0.3901 0.0397 0.2940 0.091 Uiso 1 1 calc R U . . .
H13F H 0.3292 0.1442 0.3282 0.091 Uiso 1 1 calc R U . . .
C14A C 0.5259(5) -0.1129(9) 0.3871(4) 0.063(2) Uani 1 1 d . . . . .
H14D H 0.5787 -0.1602 0.3801 0.095 Uiso 1 1 calc R U . . .
H14E H 0.4836 -0.1783 0.3714 0.095 Uiso 1 1 calc R U . . .
H14F H 0.5173 -0.1061 0.4252 0.095 Uiso 1 1 calc R U . . .
C15A C 0.6256(5) 0.3701(9) 0.3044(3) 0.0507(17) Uani 1 1 d . . . . .
C16A C 0.6123(6) 0.5318(12) 0.3021(4) 0.063(2) Uani 1 1 d . . . . .
H16A H 0.5609 0.5733 0.3110 0.075 Uiso 1 1 calc . U . . .
C17A C 0.6757(7) 0.6359(12) 0.2863(4) 0.079(3) Uani 1 1 d . . . . .
H17A H 0.6657 0.7457 0.2838 0.095 Uiso 1 1 calc . U . . .
C18A C 0.7512(7) 0.5780(13) 0.2748(4) 0.073(3) Uani 1 1 d . . . . .
H18A H 0.7938 0.6469 0.2653 0.088 Uiso 1 1 calc . U . . .
C19A C 0.7634(6) 0.4132(15) 0.2774(5) 0.081(3) Uani 1 1 d . . . . .
H19A H 0.8146 0.3711 0.2684 0.098 Uiso 1 1 calc . U . . .
C20A C 0.7020(5) 0.3112(12) 0.2930(4) 0.072(2) Uani 1 1 d . . . . .
H20A H 0.7122 0.2015 0.2958 0.086 Uiso 1 1 calc . 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 N1 1.392(6) . ?
O1 C10 1.473(7) . ?
O2 C5 1.192(10) . ?
O3 C2 1.198(8) . ?
O4 C12 1.209(7) . ?
N1 C2 1.390(9) . ?
N1 C5 1.420(8) . ?
N2 C11 1.308(9) . ?
N2 N3 1.419(7) . ?
N3 C12 1.361(8) . ?
N3 C15 1.430(8) . ?
C2 C3 1.484(10) . ?
C3 C6 1.390(11) . ?
C3 C4 1.399(10) . ?
C4 C9 1.394(10) . ?
C4 C5 1.467(11) . ?
C6 C7 1.377(9) . ?
C7 C8 1.390(9) . ?
C8 C9 1.371(10) . ?
C10 C13 1.498(9) . ?
C10 C11 1.526(9) . ?
C10 C12 1.530(9) . ?
C11 C14 1.461(10) . ?
C15 C16 1.370(10) . ?
C15 C20 1.378(11) . ?
C16 C17 1.383(13) . ?
C17 C18 1.407(16) . ?
C18 C19 1.313(18) . ?
C19 C20 1.411(13) . ?
O1A N1A 1.388(6) . ?
O1A C10A 1.473(7) . ?
O2A C5A 1.185(10) . ?
O3A C2A 1.205(7) . ?
O4A C12A 1.220(7) . ?
N1A C2A 1.381(8) . ?
N1A C5A 1.423(8) . ?
N2A C11A 1.264(9) . ?
N2A N3A 1.412(7) . ?
N3A C12A 1.354(8) . ?
N3A C15A 1.418(9) . ?
C2A C3A 1.501(9) . ?
C3A C6A 1.351(11) . ?
C3A C4A 1.375(10) . ?
C4A C9A 1.369(10) . ?
C4A C5A 1.496(10) . ?
C6A C7A 1.381(8) . ?
C7A C8A 1.386(9) . ?
C8A C9A 1.383(9) . ?
C10A C11A 1.491(9) . ?
C10A C13A 1.515(9) . ?
C10A C12A 1.531(9) . ?
C11A C14A 1.472(9) . ?
C15A C16A 1.363(10) . ?
C15A C20A 1.364(11) . ?
C16A C17A 1.402(13) . ?
C17A C18A 1.348(16) . ?
C18A C19A 1.386(18) . ?
C19A C20A 1.366(14) . ?

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
N1 O1 C10 111.4(4) . . ?
C2 N1 O1 122.6(5) . . ?
C2 N1 C5 113.5(6) . . ?
O1 N1 C5 120.9(5) . . ?
C11 N2 N3 109.2(5) . . ?
C12 N3 N2 112.3(5) . . ?
C12 N3 C15 129.3(5) . . ?
N2 N3 C15 118.3(5) . . ?
O3 C2 N1 126.6(7) . . ?
O3 C2 C3 128.9(7) . . ?
N1 C2 C3 104.2(5) . . ?
C6 C3 C4 120.7(6) . . ?
C6 C3 C2 131.2(6) . . ?
C4 C3 C2 108.1(6) . . ?
C9 C4 C3 120.4(6) . . ?
C9 C4 C5 130.0(6) . . ?
C3 C4 C5 109.6(6) . . ?
O2 C5 N1 123.7(7) . . ?
O2 C5 C4 132.9(7) . . ?
N1 C5 C4 103.4(6) . . ?
C7 C6 C3 118.1(6) . . ?
C6 C7 C8 121.2(6) . . ?
C9 C8 C7 121.2(6) . . ?
C8 C9 C4 118.3(6) . . ?
O1 C10 C13 112.8(5) . . ?
O1 C10 C11 103.3(5) . . ?
C13 C10 C11 113.9(6) . . ?
O1 C10 C12 109.9(5) . . ?
C13 C10 C12 114.4(6) . . ?
C11 C10 C12 101.6(5) . . ?
N2 C11 C14 122.6(7) . . ?
N2 C11 C10 110.5(6) . . ?
C14 C11 C10 126.8(7) . . ?
O4 C12 N3 127.6(6) . . ?
O4 C12 C10 126.3(6) . . ?
N3 C12 C10 106.0(5) . . ?
C16 C15 C20 120.5(7) . . ?
C16 C15 N3 120.6(7) . . ?
C20 C15 N3 118.9(6) . . ?
C15 C16 C17 119.9(9) . . ?
C16 C17 C18 119.3(9) . . ?
C19 C18 C17 120.3(9) . . ?
C18 C19 C20 121.4(9) . . ?
C15 C20 C19 118.5(8) . . ?
N1A O1A C10A 112.0(4) . . ?
C2A N1A O1A 122.6(5) . . ?
C2A N1A C5A 114.6(5) . . ?
O1A N1A C5A 120.3(5) . . ?
C11A N2A N3A 107.6(5) . . ?
C12A N3A N2A 112.5(5) . . ?
C12A N3A C15A 129.3(5) . . ?
N2A N3A C15A 118.2(5) . . ?
O3A C2A N1A 126.4(6) . . ?
O3A C2A C3A 129.5(6) . . ?
N1A C2A C3A 104.0(5) . . ?
C6A C3A C4A 121.7(6) . . ?
C6A C3A C2A 130.1(6) . . ?
C4A C3A C2A 108.2(6) . . ?
C9A C4A C3A 120.2(7) . . ?
C9A C4A C5A 129.5(6) . . ?
C3A C4A C5A 110.1(6) . . ?
O2A C5A N1A 124.9(7) . . ?
O2A C5A C4A 132.9(7) . . ?
N1A C5A C4A 102.2(6) . . ?
C3A C6A C7A 118.8(6) . . ?
C6A C7A C8A 120.2(6) . . ?
C9A C8A C7A 120.0(6) . . ?
C4A C9A C8A 118.9(6) . . ?
O1A C10A C11A 103.6(5) . . ?
O1A C10A C13A 111.8(5) . . ?
C11A C10A C13A 117.1(6) . . ?
O1A C10A C12A 110.0(5) . . ?
C11A C10A C12A 99.9(5) . . ?
C13A C10A C12A 113.4(6) . . ?
N2A C11A C14A 121.2(6) . . ?
N2A C11A C10A 114.2(6) . . ?
C14A C11A C10A 124.5(6) . . ?
O4A C12A N3A 127.8(6) . . ?
O4A C12A C10A 126.4(6) . . ?
N3A C12A C10A 105.7(5) . . ?
C16A C15A C20A 119.3(8) . . ?
C16A C15A N3A 120.1(8) . . ?
C20A C15A N3A 120.3(7) . . ?
C15A C16A C17A 120.2(10) . . ?
C18A C17A C16A 120.6(9) . . ?
C17A C18A C19A 118.2(8) . . ?
C20A C19A C18A 121.5(8) . . ?
C15A C20A C19A 120.1(9) . . ?

_refine_diff_density_max         0.522
_refine_diff_density_min         -0.217
_refine_diff_density_rms         0.062

_shelxl_version_number           2013-4



