InChI=1/C18H19NO2/c1-18(2,3)15-8-4-13(5-9-15)12-19-16-10-6-14(7-11-16)17(20)21/h4-12H,1-3H3,(H,20,21)/p-1/fC18H18NO2/q-1 F63E48D14333E361