InChI=1S/C28H50O9/c1-21(29)19-17-15-13-11-9-7-5-3-2-4-6-8-10-12-14-16-18-20-22(30)36-28-25(33)23(31)24(32)26(37-28)27(34)35/h2-3,21,23-26,28-29,31-33H,4-20H2,1H3,(H,34,35)/b3-2-