InChI=1S/C21H20O13S/c22-9-6-10(8-4-2-1-3-5-8)33-20-12(9)15(24)18(27)16(25)13(20)21-19(28)17(26)14(23)11(34-21)7-32-35(29,30)31/h1-6,11,14,17,19,21,23-28H,7H2,(H,29,30,31)