InChI=1S/C19H19N3O2/c23-19(24)17-5-1-3-15-12-22(21-18(15)17)16-8-6-13(7-9-16)14-4-2-10-20-11-14/h1,3,5-9,12,14,20H,2,4,10-11H2,(H,23,24)/t14-/m1/s1