InChI=1S/C19H18O15S/c20-3-8-18(34-35(29,30)31)16(27)17(28)19(33-8)9-4(21)1-6-10(13(9)24)14(25)11-7(32-6)2-5(22)12(23)15(11)26/h1-2,8,16-24,26-28H,3H2,(H,29,30,31)