InChI=1S/C26H25NO12S/c1-10-25(39-40(34,35)36)15(27)7-17(37-10)38-16-9-26(33,11(2)28)8-14-18(16)24(32)20-19(23(14)31)21(29)12-5-3-4-6-13(12)22(20)30/h3-6,15-17,25,31-33H,1,7-9,27H2,2H3,(H,34,35,36)/t15?,16?,17?,25?,26-/m0/s1