4-(1H-Benzimidazol-2-ylmeth­oxy)-3-meth­oxy­benzaldehyde tetra­hydrate

In the title compound, C(16)H(14)N(2)O(3)·4H(2)O, the dihedral angle between the mean planes of the benzimidazole ring system and benzene ring is 2.9 (1)°. The aldehyde group is disordered over two sets of sites with refined occupancies of 0.559 (4) and 0.441 (4). In the crystal, extensive inter­molecular O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds in concert with weak π–π stacking inter­actions [centroid–centroid distances = 3.6104 (9), 3.6288 (9) and 3.9167 (10) Å] create a three-dimensional network.