InChI=1S/C30H54O9/c1-2-3-4-5-6-11-14-17-20-23(38-30-27(35)25(33)26(34)28(39-30)29(36)37)21-18-15-12-9-7-8-10-13-16-19-22-24(31)32/h17,20,23,25-28,30,33-35H,2-16,18-19,21-22H2,1H3,(H,31,32)(H,36,37)/b20-17-