InChI=1/C20H21FN2O2/c1-19-12-14-13-22-23(17-6-4-16(21)5-7-17)18(14)11-15(19)3-2-8-20(19)24-9-10-25-20/h4-7,11,13H,2-3,8-10,12H2,1H3/t19-/m0/s1 E9AE6F60FAB1DB64