InChI=1S/C20H18O14S/c21-8-2-1-7(3-13(8)34-35(28,29)30)12-4-9(22)15-14(32-12)5-10(23)19(17(15)26)33-20-18(27)16(25)11(24)6-31-20/h1-5,11,16,18,20-21,23-27H,6H2,(H,28,29,30)