Abstract
In the title compound, C(21)H(24)N(2)O(4), the benzimidazole ring system is almost planar, with a maximum deviation of 0.047 (1) angstrom and makes a dihedral angle of 88.44 (5)degrees with the attached benzene ring. In the crystal, molecules form infinite chains along the b axis by way of intermolecular O-H center dot center dot center dot N and C-H center dot center dot center dot O interactions. Weak C-H center dot center dot center dot pi also contribute to the stabilization of the crystal structure.