InChI=1/C19H21NO2/c1-4-19(12-11-14(2)3)18(21)16-9-7-13-20(16)15-8-5-6-10-17(15)22-19/h5-11,13H,4,12H2,1-3H3/t19-/m0/s1 63420503BB89A5EB