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The title compound, C16H17N3O3, exists in the E configuration with respect to the azomethine double bond. The molecule is close to planar, with a dihedral angle of 6.7 (1)° between the aromatic rings. The phenolic O atom functions as donor and acceptor by forming intramolecular O—H...O and intermolecular N—H...O hydrogen bonds, respectively. Two-dimensional packing is fashioned through an intermolecular hydrogen bonding network in an offset manner.