InChI=1S/C21H20O13S/c22-7-11-14(24)21(34-35(29,30)31)18(28)20(33-11)13-16(26)17(27)15(25)12-9(23)6-10(32-19(12)13)8-4-2-1-3-5-8/h1-6,11,14,18,20-22,24-28H,7H2,(H,29,30,31)