InChI=1S/C23H41NO4/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-23(27)28-21(19-22(25)26)20-24(2,3)4/h9-10,12-13,21H,5-8,11,14-20H2,1-4H3/b10-9-,13-12-