InChI=1/C20H27NO3/c22-20(15-7-3-1-2-4-8-15)21-12-6-10-17(21)16-9-5-11-18-19(16)24-14-13-23-18/h5,9,11,15,17H,1-4,6-8,10,12-14H2/t17-/m0/s1 212B55D72A20ED55