InChI=1S/C20H24N2O7S2/c1-21(2)17(23)12-22-15-6-4-5-7-16(15)30-19(13-8-10-14(28-3)11-9-13)18(20(22)24)29-31(25,26)27/h4-11,17-19,23H,12H2,1-3H3,(H,25,26,27)