InChI=1S/C19H20O14S/c20-5-11-18(33-34(29,30)31)16(27)17(28)19(32-11)13-10(24)4-9(23)12(15(13)26)14(25)6-1-2-7(21)8(22)3-6/h1-4,11,16-24,26-28H,5H2,(H,29,30,31)