InChI=1S/C28H46O9/c1-21(36-28-25(33)23(31)24(32)26(37-28)27(34)35)19-17-15-13-11-9-7-5-3-2-4-6-8-10-12-14-16-18-20-22(29)30/h5,7,11,13,17,19,21,23-26,28,31-33H,2-4,6,8-10,12,14-16,18,20H2,1H3,(H,29,30)(H,34,35)/b7-5-,13-11-,19-17-