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The mol­ecular structure of the pyridine derivative, C19H15N3O4·C3H7NO, shows almost planar geometry with dihedral angles of 6.9 (1) and 13.4 (1)° between the pyridine ring and the two benzene rings. This conformation is stabilized by two intra­molecular N—H...N(pyridine) bonds. In the crystal, strong O—H...O(carboxamide) and N—H...O(hy­droxy­phen­yl) hydrogen bonds link the mol­ecules, forming a three-dimensional structure. The di­methyl­formamide solvent mol­ecules are not involved in the hydrogen bonding. The structure shows pseudosymmetry, but refinement in the space group Pbcn leads to significantly worse results and a disordered di­methyl­formamide mol­ecule.
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