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In the title compound, C19H22N2O4, the dihedral angle between the aromatic rings is 67.33 (2)°. In the crystal, mol­ecules are linked through N—H...O and O—H...O hydrogen bonds, generating a two-dimensional network lying parallel to (100). As a result of the twist of the mol­ecular skeleton and the hindrance of the tert-butyl groups, no π–π inter­actions exist between the aromatic rings.
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