InChI=1S/C20H18O13S/c21-8-3-1-7(2-4-8)11-5-9(22)12-14(24)16(26)15(25)13(19(12)32-11)20-17(27)18(10(23)6-31-20)33-34(28,29)30/h1-5,10,17-18,20-21,23-27H,6H2,(H,28,29,30)