InChI=1S/C20H18O14S/c21-8-2-1-7(3-9(8)22)13-4-10(23)15-14(32-13)5-11(24)18(16(15)26)33-20-17(27)19(12(25)6-31-20)34-35(28,29)30/h1-5,12,17,19-22,24-27H,6H2,(H,28,29,30)