InChI=1S/C19H21FN2O2/c1-13(2-3-14-4-6-16(7-5-14)19(21)24)22-12-18(23)15-8-10-17(20)11-9-15/h4-11,13,22H,2-3,12H2,1H3,(H2,21,24)/t13-/m1/s1