InChI=1S/C22H20O13S/c1-8(2)5-11(23)14-10(7-33-36(29,30)31)17-20(16(25)19(14)32-4)35-22(28)13-9(3)6-12(24)15(21(26)27)18(13)34-17/h5-6,24-25H,7H2,1-4H3,(H,26,27)(H,29,30,31)