Abstract
In the title compound, C27H21N3O3, the cyclohexa-1,3-diene ring has a screw-boat conformation, and the fused ring system is folded, the dihedral angle between the outer benzene rings being 27.61(6)degrees. The N-acetylacetamide residue (r.m.s. deviation = 0.0935 angstrom) has an anti conformation and is essentially perpendicular to the benzene ring to which it is connected [dihedral angle = 89.14 (6)degrees]; the methoxybenzene group is also twisted out of this ring [dihedral angle = 59.47 (7)degrees]. The three-dimensional architecture is consolidated by C-H center dot center dot center dot O and C-H center dot center dot center dot teractions.