3-Benzyl­idene-1′-methyl-4′-phenyl­cyclo­hexane­spiro-3′-pyrrolidine-2′-spiro-3′′-indoline-2,2′′-dione

In the title compound, C₃₀H₂₈N₂O₂, there are two mol­ecules in the asymmetric unit. In both mol­ecules, the pyrrolidine ring adopts an envelope conformation whereas the conformation of the cyclo­hexane ring is half-chair. The ox­indole moiety is almost perpendicular to the pyrrolidine ring; the benzyl­idene moiety and the phenyl ring are in equatorial and bisectional configurations with respect to their attached pyrrolidine and cyclo­hexanone rings, respectively. Intramolecular C—H⋯O and intermolecular N—H⋯N and N—H⋯O interactions stabilize the molecular structure and the packing in the crystal.