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