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