InChI=1S/C22H28N2O/c1-24(16-9-4-10-17-24)18-15-22(21(23)25,19-11-5-2-6-12-19)20-13-7-3-8-14-20/h2-3,5-8,11-14H,4,9-10,15-18H2,1H3,(H-,23,25)/p+1