(4-Chloro­benzoyl)(2-eth­oxy-7-methoxy­naphthalen-1-yl)methanone

In the title compound, C(20)H(17)ClO(3), the naphthalene and benzene rings form an inter­planar angle of 83.30 (8)°. The conformation around the central C=O group is such that the C=O bond vector forms a larger angle to the plane of the naphthalene ring than to the plane of the benzene ring, viz. 55.8 (2)° versus 15.8 (2)°. The 4-chloro­phenyl groups form a centrosymmetric π–π inter­action, with a centroid–centroid distance of 3.829 (1) Å and a lateral offset of 1.758 Å. An inter­molecular C—H⋯O inter­action is formed between the 4-chloro­phenyl group and the O atom of a neighbouring meth­oxy group, and two very weak C—H⋯π contacts are present.