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