InChI=1S/C28H50O9/c1-2-3-4-5-9-12-15-18-21(19-16-13-10-7-6-8-11-14-17-20-22(29)30)36-28-25(33)23(31)24(32)26(37-28)27(34)35/h16,19,21,23-26,28,31-33H,2-15,17-18,20H2,1H3,(H,29,30)(H,34,35)/b19-16-