InChI=1S/C30H54O9/c31-23-21-19-17-15-13-11-9-7-5-3-1-2-4-6-8-10-12-14-16-18-20-22-24(32)38-30-27(35)25(33)26(34)28(39-30)29(36)37/h5,7,25-28,30-31,33-35H,1-4,6,8-23H2,(H,36,37)/b7-5-