InChI=1S/C18H28N2O/c1-13(2)16-8-7-14(3)12-17(16)18(21)20-11-9-15-6-4-5-10-19-15/h4-6,10,13-14,16-17H,7-9,11-12H2,1-3H3,(H,20,21)/t14-,16+,17-/m1/s1