title: Methyl 2-{[(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl-idene)(4-nitro-phen-yl)meth-yl]amino}-3-phenyl-propano-ate.
abstract: The mol-ecule of the title compound, C(27)H(24)N(4)O(5), exists in the keto-enamine tautomeric form, stabilized by an intra-molecular N-H⋯O hydrogen bond. An intra-molecular C-H⋯·O hydrogen bond also occurs. In the crystal, C-H⋯O hydrogen bonds link the mol-ecules into chains.
authors.affiliation: College of Chemistry, Tianjin Normal University, Tianjin 300387,  People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.forename: Chen
authors.initials: C
authors.lastname: Sun
authors.forename: Fei-Ran
authors.initials: FR
authors.lastname: Li
authors.forename: Hua
authors.initials: H
authors.lastname: Zhang