InChI=1S/C26H38O8/c1-15(10-11-17-16(2)9-7-12-25(17,3)4)8-6-13-26(5)18(34-26)14-32-24-21(29)19(27)20(28)22(33-24)23(30)31/h6,8,10-11,13,18-22,24,27-29H,7,9,12,14H2,1-5H3,(H,30,31)/b11-10+,13-6+,15-8+