InChI=1S/C21H24O14S/c22-8-14-16(26)18(28)19(29)21(33-14)34-20-12(25)7-11(24)15(17(20)27)13(35-36(30,31)32)6-3-9-1-4-10(23)5-2-9/h1-7,13-14,16,18-19,21-29H,8H2,(H,30,31,32)/b6-3+