InChI=1/C20H18N2O7S2/c1-13-11-18(23)20(30(26,27)16-8-4-3-5-9-16)14(2)19(13)21-31(28,29)17-10-6-7-15(12-17)22(24)25/h3-12,21,23H,1-2H3 46335658A214D514