The phenyl ring in title mol-ecule, C(16)H(11)NO(3), forms a dihedral angle of 7.69 (6)° with the fused ring system. The observed conformation is stabilized by intra-molecular N-H⋯O and C-H⋯O inter-actions. In the crystal, supra-molecular chains are formed along the b axis which are mediated by π-π inter-actions [centroid-centroid distance = 3.614 (2) Å].