N-{2-[N-(4-Methyl-phen-yl)oxamo-yl]phen-yl}propanamide.

The title compound, C(18)H(18)N(2)O(3), is the product of the heterocyclic ring cleavage at position 2 of 1-propionylisatin. Two centrosymmetric cyclic motifs, viz. R(2) (2)(14) and R(2) (2)(18), are formed by N-H⋯O hydrogen bonds with the propanamide and amino-phenyl units, respectively, as the N-H donors. These motifs combine into two C(2) (2)(8) chain motifs parallel to the b axis. The chain structure is stabilized by C-H⋯π inter-actions between the benzene rings, where C-H is from the phenyl ring of the cleaved part of 1-pro-pionylisatin.