InChI=1S/C27H38O7/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-16-20-17-15-18-21(19-20)33-27-24(30)22(28)23(29)25(34-27)26(31)32/h2,4-5,7-8,15,17-19,22-25,27-30H,1,3,6,9-14,16H2,(H,31,32)/b5-4+,8-7+