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

In the title compound, C23H22N4O4, the essentially planar [maximum deviation = 0.022 (1) angstrom] benzimidazole ring system forms dihedral angles of 86.16 (7) and 37.38 (6)degrees, respectively, with the imidazole and benzene rings. The dioxolane ring adopts an envelope conformation with the methylene C atom at the flap. In the crystal, C-H center dot center dot center dot O and C-H center dot center dot center dot N interactions link the molecules into a ribbon along the a axis. The crystal packing is further stabilized by weak pi-pi stacking interactions [centroid-centroid distances = 3.5954 (8) and 3.7134 (8) angstrom] and C-H center dot center dot center dot pi interactions.