# 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_322
_database_code_depnum_ccdc_archive 'CCDC 1870596'
_audit_update_record             
;
2018-09-29 deposited with the CCDC.
2019-01-03 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-2014/7
_shelx_SHELXL_version_number     2014/7
_chemical_name_systematic        ?
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         'C26 H22 O3 S'
_chemical_formula_sum            'C26 H22 O3 S'
_chemical_formula_weight         414.49

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'
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           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                   10.9451(3)
_cell_length_b                   7.7900(2)
_cell_length_c                   25.6813(9)
_cell_angle_alpha                90
_cell_angle_beta                 95.0229(14)
_cell_angle_gamma                90
_cell_volume                     2181.24(11)
_cell_formula_units_Z            4
_cell_measurement_temperature    296(2)
_cell_measurement_reflns_used    5562
_cell_measurement_theta_min      2.73
_cell_measurement_theta_max      24.73

_exptl_crystal_description       Block
_exptl_crystal_colour            colourless
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.262
_exptl_crystal_F_000             872
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.220
_exptl_crystal_size_min          0.100
_exptl_absorpt_coefficient_mu    0.173
_shelx_estimated_absorpt_T_min   0.958
_shelx_estimated_absorpt_T_max   0.983
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.958
_exptl_absorpt_correction_T_max  0.983
_exptl_absorpt_process_details   'SADABS V2014/5(Bruker AXS.Inc)'
_exptl_absorpt_special_details   ?
_diffrn_ambient_temperature      296(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_source                   ?
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'φ and ω scans'
_diffrn_detector_area_resol_mean ?
_diffrn_reflns_number            10933
_diffrn_reflns_av_unetI/netI     0.0341
_diffrn_reflns_av_R_equivalents  0.0231
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_theta_min         1.868
_diffrn_reflns_theta_max         24.999
_diffrn_reflns_theta_full        24.999
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measured_fraction_theta_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_point_group_measured_fraction_full 1.000
_reflns_number_total             3834
_reflns_number_gt                2743
_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       'Bruker APEX2'
_computing_cell_refinement       'Bruker SAINT'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_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)+(0.0373P)²+0.6798P] 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         3834
_refine_ls_number_parameters     273
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0694
_refine_ls_R_factor_gt           0.0424
_refine_ls_wR_factor_ref         0.1082
_refine_ls_wR_factor_gt          0.0934
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_restrained_S_all      1.046
_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
C1 C 0.4903(2) 0.5450(3) 0.20684(9) 0.0622(6) Uani 1 1 d . . . . .
H1 H 0.4145 0.4903 0.2048 0.075 Uiso 1 1 calc R U . . .
C2 C 0.5726(2) 0.5192(3) 0.24949(10) 0.0730(7) Uani 1 1 d . . . . .
H2 H 0.5526 0.4456 0.2760 0.088 Uiso 1 1 calc R U . . .
C3 C 0.6841(2) 0.6006(3) 0.25356(10) 0.0729(7) Uani 1 1 d . . . . .
H3 H 0.7391 0.5830 0.2828 0.088 Uiso 1 1 calc R U . . .
C4 C 0.7140(2) 0.7075(3) 0.21451(11) 0.0711(7) Uani 1 1 d . . . . .
H4 H 0.7895 0.7632 0.2173 0.085 Uiso 1 1 calc R U . . .
C5 C 0.6332(2) 0.7335(3) 0.17112(10) 0.0617(6) Uani 1 1 d . . . . .
H5 H 0.6547 0.8056 0.1446 0.074 Uiso 1 1 calc R U . . .
C6 C 0.51992(19) 0.6527(3) 0.16677(9) 0.0506(5) Uani 1 1 d . . . . .
C7 C 0.43451(19) 0.6804(3) 0.12061(9) 0.0513(5) Uani 1 1 d . . . . .
C8 C 0.3969(2) 0.7302(3) 0.03534(9) 0.0517(5) Uani 1 1 d . . . . .
C9 C 0.28623(19) 0.7301(3) 0.05592(9) 0.0516(5) Uani 1 1 d . . . . .
C10 C 0.31080(19) 0.6970(3) 0.11134(9) 0.0515(5) Uani 1 1 d . . . . .
C11 C 0.12788(18) 0.5206(3) 0.15875(8) 0.0492(5) Uani 1 1 d . . . . .
C12 C 0.1544(2) 0.3815(3) 0.12863(9) 0.0580(6) Uani 1 1 d . . . . .
H12 H 0.2197 0.3866 0.1079 0.070 Uiso 1 1 calc R U . . .
C13 C 0.0839(2) 0.2344(3) 0.12920(10) 0.0634(6) Uani 1 1 d . . . . .
H13 H 0.1028 0.1415 0.1086 0.076 Uiso 1 1 calc R U . . .
C14 C -0.0136(2) 0.2214(3) 0.15938(10) 0.0644(6) Uani 1 1 d . . . . .
C15 C -0.0382(2) 0.3606(4) 0.18962(11) 0.0743(7) Uani 1 1 d . . . . .
H15 H -0.1031 0.3548 0.2106 0.089 Uiso 1 1 calc R U . . .
C16 C 0.0313(2) 0.5094(3) 0.18967(9) 0.0652(6) Uani 1 1 d . . . . .
H16 H 0.0128 0.6017 0.2106 0.078 Uiso 1 1 calc R U . . .
C17 C -0.0910(3) 0.0597(4) 0.15837(13) 0.0971(10) Uani 1 1 d . . . . .
H17A H -0.1497 0.0688 0.1839 0.146 Uiso 1 1 calc R U . . .
H17B H -0.0389 -0.0378 0.1663 0.146 Uiso 1 1 calc R U . . .
H17C H -0.1332 0.0456 0.1243 0.146 Uiso 1 1 calc R U . . .
C18 C 0.4412(2) 0.7548(2) -0.01607(9) 0.0532(5) Uani 1 1 d . . . . .
C19 C 0.5594(2) 0.8153(3) -0.01979(10) 0.0635(6) Uani 1 1 d . . . . .
H19 H 0.6097 0.8382 0.0105 0.076 Uiso 1 1 calc R U . . .
C20 C 0.6027(3) 0.8418(3) -0.06764(12) 0.0790(8) Uani 1 1 d . . . . .
H20 H 0.6822 0.8819 -0.0696 0.095 Uiso 1 1 calc R U . . .
C21 C 0.5294(3) 0.8094(4) -0.11251(12) 0.0881(9) Uani 1 1 d . . . . .
H21 H 0.5589 0.8289 -0.1449 0.106 Uiso 1 1 calc R U . . .
C22 C 0.4130(3) 0.7485(4) -0.10978(11) 0.0881(9) Uani 1 1 d . . . . .
H22 H 0.3638 0.7251 -0.1403 0.106 Uiso 1 1 calc R U . . .
C23 C 0.3684(2) 0.7216(3) -0.06188(10) 0.0723(7) Uani 1 1 d . . . . .
H23 H 0.2889 0.6810 -0.0603 0.087 Uiso 1 1 calc R U . . .
C24 C 0.1670(2) 0.7731(3) 0.02790(10) 0.0576(6) Uani 1 1 d . . . . .
C25 C -0.0478(2) 0.7253(4) 0.02515(11) 0.0790(8) Uani 1 1 d . . . . .
H25A H -0.0586 0.6834 -0.0105 0.095 Uiso 1 1 calc R U . . .
H25B H -0.0639 0.8478 0.0249 0.095 Uiso 1 1 calc R U . . .
C26 C -0.1322(2) 0.6355(4) 0.05782(13) 0.0969(10) Uani 1 1 d . . . . .
H26A H -0.1104 0.5162 0.0604 0.145 Uiso 1 1 calc R U . . .
H26B H -0.2148 0.6465 0.0422 0.145 Uiso 1 1 calc R U . . .
H26C H -0.1261 0.6855 0.0921 0.145 Uiso 1 1 calc R U . . .
O1 O 0.48755(12) 0.69984(18) 0.07463(6) 0.0544(4) Uani 1 1 d . . . . .
O2 O 0.15273(16) 0.8708(3) -0.00839(8) 0.0916(6) Uani 1 1 d . . . . .
O3 O 0.07603(13) 0.6908(2) 0.04776(6) 0.0671(5) Uani 1 1 d . . . . .
S1 S 0.21078(5) 0.71633(8) 0.16069(2) 0.06106(19) 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
C1 C2 1.371(3) . ?
C1 C6 1.388(3) . ?
C1 H1 0.9300 . ?
C2 C3 1.371(3) . ?
C2 H2 0.9300 . ?
C3 C4 1.366(3) . ?
C3 H3 0.9300 . ?
C4 C5 1.376(3) . ?
C4 H4 0.9300 . ?
C5 C6 1.386(3) . ?
C5 H5 0.9300 . ?
C6 C7 1.460(3) . ?
C7 C10 1.360(3) . ?
C7 O1 1.369(2) . ?
C8 C9 1.364(3) . ?
C8 O1 1.372(2) . ?
C8 C18 1.458(3) . ?
C9 C10 1.448(3) . ?
C9 C24 1.472(3) . ?
C10 S1 1.752(2) . ?
C11 C12 1.377(3) . ?
C11 C16 1.379(3) . ?
C11 S1 1.773(2) . ?
C12 C13 1.383(3) . ?
C12 H12 0.9300 . ?
C13 C14 1.376(3) . ?
C13 H13 0.9300 . ?
C14 C15 1.374(4) . ?
C14 C17 1.517(3) . ?
C15 C16 1.386(3) . ?
C15 H15 0.9300 . ?
C16 H16 0.9300 . ?
C17 H17A 0.9600 . ?
C17 H17B 0.9600 . ?
C17 H17C 0.9600 . ?
C18 C23 1.387(3) . ?
C18 C19 1.388(3) . ?
C19 C20 1.371(3) . ?
C19 H19 0.9300 . ?
C20 C21 1.369(4) . ?
C20 H20 0.9300 . ?
C21 C22 1.368(4) . ?
C21 H21 0.9300 . ?
C22 C23 1.379(4) . ?
C22 H22 0.9300 . ?
C23 H23 0.9300 . ?
C24 O2 1.203(3) . ?
C24 O3 1.324(3) . ?
C25 O3 1.452(3) . ?
C25 C26 1.477(4) . ?
C25 H25A 0.9700 . ?
C25 H25B 0.9700 . ?
C26 H26A 0.9600 . ?
C26 H26B 0.9600 . ?
C26 H26C 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
C2 C1 C6 120.1(2) . . ?
C2 C1 H1 120.0 . . ?
C6 C1 H1 120.0 . . ?
C1 C2 C3 120.8(2) . . ?
C1 C2 H2 119.6 . . ?
C3 C2 H2 119.6 . . ?
C4 C3 C2 119.7(2) . . ?
C4 C3 H3 120.2 . . ?
C2 C3 H3 120.2 . . ?
C3 C4 C5 120.4(2) . . ?
C3 C4 H4 119.8 . . ?
C5 C4 H4 119.8 . . ?
C4 C5 C6 120.4(2) . . ?
C4 C5 H5 119.8 . . ?
C6 C5 H5 119.8 . . ?
C5 C6 C1 118.7(2) . . ?
C5 C6 C7 120.2(2) . . ?
C1 C6 C7 121.13(19) . . ?
C10 C7 O1 109.23(19) . . ?
C10 C7 C6 135.5(2) . . ?
O1 C7 C6 115.27(18) . . ?
C9 C8 O1 108.92(19) . . ?
C9 C8 C18 136.7(2) . . ?
O1 C8 C18 114.36(18) . . ?
C8 C9 C10 106.63(19) . . ?
C8 C9 C24 126.1(2) . . ?
C10 C9 C24 127.0(2) . . ?
C7 C10 C9 106.57(19) . . ?
C7 C10 S1 123.84(18) . . ?
C9 C10 S1 128.42(16) . . ?
C12 C11 C16 118.9(2) . . ?
C12 C11 S1 124.07(16) . . ?
C16 C11 S1 117.04(17) . . ?
C11 C12 C13 120.1(2) . . ?
C11 C12 H12 120.0 . . ?
C13 C12 H12 120.0 . . ?
C14 C13 C12 121.8(2) . . ?
C14 C13 H13 119.1 . . ?
C12 C13 H13 119.1 . . ?
C15 C14 C13 117.4(2) . . ?
C15 C14 C17 121.9(2) . . ?
C13 C14 C17 120.7(3) . . ?
C14 C15 C16 121.7(2) . . ?
C14 C15 H15 119.1 . . ?
C16 C15 H15 119.1 . . ?
C11 C16 C15 120.0(2) . . ?
C11 C16 H16 120.0 . . ?
C15 C16 H16 120.0 . . ?
C14 C17 H17A 109.5 . . ?
C14 C17 H17B 109.5 . . ?
H17A C17 H17B 109.5 . . ?
C14 C17 H17C 109.5 . . ?
H17A C17 H17C 109.5 . . ?
H17B C17 H17C 109.5 . . ?
C23 C18 C19 118.4(2) . . ?
C23 C18 C8 122.1(2) . . ?
C19 C18 C8 119.5(2) . . ?
C20 C19 C18 120.7(3) . . ?
C20 C19 H19 119.7 . . ?
C18 C19 H19 119.7 . . ?
C21 C20 C19 120.3(3) . . ?
C21 C20 H20 119.9 . . ?
C19 C20 H20 119.9 . . ?
C22 C21 C20 120.0(3) . . ?
C22 C21 H21 120.0 . . ?
C20 C21 H21 120.0 . . ?
C21 C22 C23 120.2(3) . . ?
C21 C22 H22 119.9 . . ?
C23 C22 H22 119.9 . . ?
C22 C23 C18 120.4(3) . . ?
C22 C23 H23 119.8 . . ?
C18 C23 H23 119.8 . . ?
O2 C24 O3 123.6(2) . . ?
O2 C24 C9 124.9(2) . . ?
O3 C24 C9 111.5(2) . . ?
O3 C25 C26 107.0(2) . . ?
O3 C25 H25A 110.3 . . ?
C26 C25 H25A 110.3 . . ?
O3 C25 H25B 110.3 . . ?
C26 C25 H25B 110.3 . . ?
H25A C25 H25B 108.6 . . ?
C25 C26 H26A 109.5 . . ?
C25 C26 H26B 109.5 . . ?
H26A C26 H26B 109.5 . . ?
C25 C26 H26C 109.5 . . ?
H26A C26 H26C 109.5 . . ?
H26B C26 H26C 109.5 . . ?
C7 O1 C8 108.64(16) . . ?
C24 O3 C25 117.62(19) . . ?
C10 S1 C11 104.85(10) . . ?

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
C6 C1 C2 C3 0.9(4) . . . . ?
C1 C2 C3 C4 -0.5(4) . . . . ?
C2 C3 C4 C5 -0.3(4) . . . . ?
C3 C4 C5 C6 0.7(4) . . . . ?
C4 C5 C6 C1 -0.3(3) . . . . ?
C4 C5 C6 C7 -179.9(2) . . . . ?
C2 C1 C6 C5 -0.5(3) . . . . ?
C2 C1 C6 C7 179.1(2) . . . . ?
C5 C6 C7 C10 -142.7(3) . . . . ?
C1 C6 C7 C10 37.7(4) . . . . ?
C5 C6 C7 O1 35.1(3) . . . . ?
C1 C6 C7 O1 -144.5(2) . . . . ?
O1 C8 C9 C10 -0.2(2) . . . . ?
C18 C8 C9 C10 -179.7(2) . . . . ?
O1 C8 C9 C24 174.15(19) . . . . ?
C18 C8 C9 C24 -5.4(4) . . . . ?
O1 C7 C10 C9 -0.4(2) . . . . ?
C6 C7 C10 C9 177.5(2) . . . . ?
O1 C7 C10 S1 -169.02(14) . . . . ?
C6 C7 C10 S1 8.9(4) . . . . ?
C8 C9 C10 C7 0.4(2) . . . . ?
C24 C9 C10 C7 -173.9(2) . . . . ?
C8 C9 C10 S1 168.27(16) . . . . ?
C24 C9 C10 S1 -6.0(3) . . . . ?
C16 C11 C12 C13 0.7(3) . . . . ?
S1 C11 C12 C13 -179.37(17) . . . . ?
C11 C12 C13 C14 -0.1(4) . . . . ?
C12 C13 C14 C15 -0.6(4) . . . . ?
C12 C13 C14 C17 178.7(2) . . . . ?
C13 C14 C15 C16 0.5(4) . . . . ?
C17 C14 C15 C16 -178.8(2) . . . . ?
C12 C11 C16 C15 -0.8(3) . . . . ?
S1 C11 C16 C15 179.33(19) . . . . ?
C14 C15 C16 C11 0.1(4) . . . . ?
C9 C8 C18 C23 -25.8(4) . . . . ?
O1 C8 C18 C23 154.7(2) . . . . ?
C9 C8 C18 C19 153.4(2) . . . . ?
O1 C8 C18 C19 -26.1(3) . . . . ?
C23 C18 C19 C20 0.1(3) . . . . ?
C8 C18 C19 C20 -179.1(2) . . . . ?
C18 C19 C20 C21 0.3(4) . . . . ?
C19 C20 C21 C22 -0.8(4) . . . . ?
C20 C21 C22 C23 0.9(4) . . . . ?
C21 C22 C23 C18 -0.5(4) . . . . ?
C19 C18 C23 C22 0.0(3) . . . . ?
C8 C18 C23 C22 179.2(2) . . . . ?
C8 C9 C24 O2 -29.2(4) . . . . ?
C10 C9 C24 O2 144.0(2) . . . . ?
C8 C9 C24 O3 151.1(2) . . . . ?
C10 C9 C24 O3 -35.7(3) . . . . ?
C10 C7 O1 C8 0.3(2) . . . . ?
C6 C7 O1 C8 -178.06(17) . . . . ?
C9 C8 O1 C7 -0.1(2) . . . . ?
C18 C8 O1 C7 179.57(16) . . . . ?
O2 C24 O3 C25 -1.9(3) . . . . ?
C9 C24 O3 C25 177.9(2) . . . . ?
C26 C25 O3 C24 -173.3(2) . . . . ?
C7 C10 S1 C11 -110.40(18) . . . . ?
C9 C10 S1 C11 83.6(2) . . . . ?
C12 C11 S1 C10 7.8(2) . . . . ?
C16 C11 S1 C10 -172.32(17) . . . . ?

_refine_diff_density_max         0.216
_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.032

