InChI=1/C18H20N2O/c1-11-6-12(2)8-15(7-11)18(19)13-4-5-16-14(9-13)10-17(21)20(16)3/h4-9,18H,10,19H2,1-3H3/p+1/t18-/m1/s1/fC18H21N2O/h19H/q+1 48118AD84F44FB64