title: Diethyl 2-oxo-3-(2-oxo-2,3-dihydro-1H-indol-3-yl-idene)butane-dioate.
abstract: The title compound, C(16)H(15)NO(6), crystallizes with two symmetry-independent mol-ecules in the asymmetric unit. The crystal structure is stabilized by inter-molecular C-H⋯O and N-H⋯O hydrogen bonds, and intra-molecular C-H⋯O hydrogen bonds. In addition, the crystal structure exhibits two inter-molecular C-H⋯π inter-actions.
authors.forename: I K
authors.initials: IK
authors.lastname: Lenintamikovan
authors.forename: A
authors.initials: A
authors.lastname: Subbiahpandi
authors.forename: M
authors.initials: M
authors.lastname: Damodiran
authors.forename: K
authors.initials: K
authors.lastname: Karthikeyan
authors.forename: P T
authors.initials: PT
authors.lastname: Perumal