InChI=1S/C27H33NO3/c1-19(2)9-8-10-20(3)13-14-23-24(31-4)17-22-18-28(27(30)25(22)26(23)29)16-15-21-11-6-5-7-12-21/h5-7,9,11-13,17,29H,8,10,14-16,18H2,1-4H3/b20-13+