In the title compound, C(25)H(27)N(5)O(4), the piperizine ring adopts a chair conformation. The dihedral angles between the pyridine ring and the two benzene rings are 65.5 (4) and 70.7 (4)°, while the dihedral angle between the two benzene rings is 17.3 (3)°. An intra-molecular C-H⋯O hydrogen bond occurs.