InChI=1S/C24H22O9S/c1-12(2)20(26)19-21(27)18-16(13-5-7-14(8-6-13)33-34(28,29)30)11-17(25)31-22(18)15-9-10-24(3,4)32-23(15)19/h5-12,27H,1-4H3,(H,28,29,30)