InChI=1S/C19H27N3O3/c1-12(2)18(20-4)19(24)22-15(11-25-13(3)23)9-14-10-21-17-8-6-5-7-16(14)17/h5-8,10,12,15,18,20-21H,9,11H2,1-4H3,(H,22,24)/t15-,18-/m0/s1