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organic compounds
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The conformation adopted by the title compound, C20H21N3O3, in the crystal is `J'-shaped and appears to be at least partially directed by a weak intramolecular C—HN hydrogen bond. In the crystal, molecules are linked by N—HO hydrogen bonds, forming dimers with R22(8) motifs. Furthermore, these dimers connect to each other via C—HO and N—HO hydrogen bonds to form a three-dimensional network.