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The title compound, C21H21N3O2, adopts a J-shaped conformation which appears to be at least partially directed by a weak intra­molecular C—H...N hydrogen bond. In the crystal, mol­ecules are linked by N—H...O hydrogen bonds into R22(8) and R22(14) cyclic dimers, which form a chain running parallel to the b axis.

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The title mol­ecule, C21H20N2O2, exists in the solid state in the `extended' form. The crystal packing consists of ribbons of mol­ecules extending parallel to c and associated via N—H...O and weak C—H...O hydrogen bonds. C—H...π inter­actions are also present.
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