InChI=1/C18H21NO2/c1-19-8-6-15-11-17(20)4-2-13(15)10-14-3-5-18(21)12-16(14)7-9-19/h2-5,11-12,20-21H,6-10H2,1H3/p+1/fC18H22NO2/h19H/q+1 A1FF121A1CB76531