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