In the title molecule, C(18)H(17)N(5)O(2), the dihedral angle between the benzene plane and the benzimidazole plane is 19.8 (1)° and the angle between the benzene plane and the triazole plane is 16.7 (1)°. In the crystal, mol-ecules are connected by O-H⋯N hydrogen bonds, forming zigzag chains along the c-axis direction. The chains are connected by bifurcated N-H⋯(N,N) hydrogen bonds into layers parallel to (100). These layers are connected along the a-axis direction by weak C-H⋯O contacts, forming a three-dimensional network.
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