InChI=1/C18H24N2O/c21-16(18(9-10-18)15-6-2-5-12-19-15)20-13-11-17(14-20)7-3-1-4-8-17/h2,5-6,12H,1,3-4,7-11,13-14H2 1671B21ECF2D8AB6