InChI=1S/C20H27NO3/c1-16(2)15-21-20(23)11-9-7-5-4-6-8-10-17-12-13-18(22)19(14-17)24-3/h5,7-14,16,22H,4,6,15H2,1-3H3,(H,21,23)/b7-5+,10-8+,11-9+