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The title compound, C20H16N2O2, was synthesized by the reaction of 2-hydroxybenzohydrazide with diphenylmethanone. The dihedral angle between the phenyl rings is 76.28 (11)°. The amino H atom is involved in an intramolecular N—H...O hydrogen bond. In the crystal structure, the hydroxy groups and carbonyl O atoms form intermolecular O—H...O hydrogen bonds, which link the molecules into chains running along the b axis.