Ethyl 2-(4-meth-oxy-phen-yl)-1-[3-(2-oxopyrrolidin-1-yl)prop-yl]-1H-benzimidazole-5-carboxyl-ate.

The asymmetric unit of the title compound, C(24)H(27)N(3)O(4), contains two mol-ecules, A and B. The benzimidazole rings are essentially planar [maximum deviations = 0.0144 (10) and 0.0311 (8) Å in A and B, respectively]. The dihedral angle between the benzimidazole mean plane and its attached benzene ring is 36.90 (5) ° for mol-ecule A and 51.40 (5) ° for mol-ecule B. In both mol-ecules, the pyrrolidine ring adopts an envelope conformation with a C atom as the flap. In molecule B, the flap C atom is disordered over two positions in a 0.711 (6):0.289 (6) ratio. In the crystal, C-H⋯O inter-actions link the mol-ecules, generating [100] chains. The crystal packing also features weak π-π inter-actions between the imidazole and benzene rings [centroid-centroid distances = 3.8007 (7) and 3.8086 (7) Å] and between the benzene rings [centroid-centroid distance = 3.7001 (7) Å] and C-H⋯π inter-actions involving the benzene rings.