InChI=1S/C20H20O14S/c21-6-13-18(34-35(28,29)30)16(27)20(32-13)33-19-15(26)14-11(25)4-8(22)5-12(14)31-17(19)7-1-2-9(23)10(24)3-7/h1-5,13,16-25,27H,6H2,(H,28,29,30)