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