InChI=1S/C22H31NO2/c1-16(2)23(17(3)4)13-12-20(19-8-6-5-7-9-19)21-14-18(15-24)10-11-22(21)25/h5-11,14,16-17,20,24-25H,12-13,15H2,1-4H3/t20-/m1/s1