InChI=1S/C19H26N2O/c22-19(12-11-16-7-2-1-3-8-16)21-14-6-9-17(15-21)18-10-4-5-13-20-18/h1-3,7-8,11-12,17-18,20H,4-6,9-10,13-15H2/b12-11-