InChI=1S/C21H20O12S/c22-10-6-12(9-4-2-1-3-5-9)32-13-7-11(23)16(18(25)15(10)13)21-20(27)19(26)17(24)14(33-21)8-31-34(28,29)30/h1-7,14,17,19-21,23-27H,8H2,(H,28,29,30)