InChI=1S/C21H18O16S/c22-7-4-10-12(11(5-7)35-21-16(28)14(26)15(27)19(36-21)20(29)30)13(25)18(37-38(31,32)33)17(34-10)6-1-2-8(23)9(24)3-6/h1-5,14-16,19,21-24,26-28H,(H,29,30)(H,31,32,33)