The β-lactam ring of the title compound, C(26)H(25)ClN(2)O(4), is nearly planar (r.m.s. deviation = 0.025 Å) and the morpholine ring adopts a chair conformation. The mean plane of the β-lactam ring makes dihedral angles of 21.6 (4), 84.4 (4) and 33.7 (4)° with the two benzene rings and the phenyl ring, respectively. The conformation of the title compound is stabilized by intra-molecular C-H⋯O and O-H⋯N inter-actions. The crystal structure features C-H⋯π and aromatic π-π stacking inter-actions [centroid-centroid distances = 3.684 (4) and 3.883 (4) Å].