Ethyl 2-(1,3-benzodioxol-5-yl)-1-[3-(2-oxopyrrolidin-1-yl)propyl]-1H-benzimidazole-5-carboxylate

In the title compound, C24H25N3O5, the benzimidazole and benzodioxole ring systems are each approximately planar [maximum deviations = 0.043 (1) and 0.036 (1) angstrom, respectively]. Their mean planes form a dihedral angle of 42.85 (4)degrees. The pyrrolidine ring has an envelope conformation with one of the methylene C atoms forming the flap. In the crystal, weak C-H center dot center dot center dot O hydrogen bonds link the molecules into a three-dimensional network. The crystal packing is further stabillized by weak pi-pi interactions between the benzene rings within the benzimidazole ring system [centroid-centroid distance = 3.7955 (7) angstrom]. A weak C-H center dot center dot center dot pi interaction involving the benzodioxole ring is also present.