InChI=1S/C28H46O9/c1-2-3-15-18-21(36-28-25(33)23(31)24(32)26(37-28)27(34)35)19-16-13-11-9-7-5-4-6-8-10-12-14-17-20-22(29)30/h3,11,13,15-16,19,21,23-26,28,31-33H,2,4-10,12,14,17-18,20H2,1H3,(H,29,30)(H,34,35)/b13-11-,15-3-,19-16+