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