InChI=1S/C26H40O13/c1-2-3-6-9-15(37-34)12-13-26(33)16(17-14-18(26)39-38-17)10-7-4-5-8-11-19(27)35-25-22(30)20(28)21(29)23(36-25)24(31)32/h4,7,12-13,15-18,20-23,25,28-30,33-34H,2-3,5-6,8-11,14H2,1H3,(H,31,32)/b7-4-,13-12+