Abstract
In the title mol-ecule, C21H17N3O2, the five-membered ring is slightly ruffled and dihedral angles between the pendant six-membered rings and the central, five-membered ring vary between 50.78 (4) and 86.78 (10)°. The exocyclic nitro-gen lone pair is involved in conjugated π bonding to the five-membered ring. In the crystal, a layered structure is generated by O-H⋯N and N-H⋯O hydrogen bonds plus C-H⋯π(ring) and weak π-stacking inter-actions.
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