InChI=1S/C20H29NO14S2/c1-8-13(23)15(25)17(27)19(32-8)33-10-4-2-9(3-5-10)6-12(21-35-37(29,30)31)36-20-18(28)16(26)14(24)11(7-22)34-20/h2-5,8,11,13-20,22-28H,6-7H2,1H3,(H,29,30,31)/b21-12+