7′-Phenyl-5′,6′,7′,7a′-tetra­hydro­dipiro[indan-2,5′-pyrrolo­[1,2-c][1,3]thia­zole-6′,2′′-indan]-1,3,1′′-trione

The asymmetric unit of the title compound, C(28)H(21)NO(3)S, contains two mol­ecules with similar geometries. The thia­zolidine rings adopt half-chair conformations while the pyrrolidine and the diketo-substituted five-membered carbocyclic rings are in envelope conformations with the spiro C atoms at the flaps. In one mol­ecule, the phenyl ring forms dihedral angles of 57.76 (12) and 71.79 (12)° with the fused benzene rings and the fused benzene rings form a dihedral angle of 57.75 (13)°. The corresponding dihedral angles in the other mol­ecule are 60.04 (12), 72.93 (12) and 54.51 (13)°. The mol­ecular structure is stabilized by intra­molecular C—H⋯O hydrogen bonds, which generate S(6) ring motifs. In the crystal, mol­ecules are linked via C—H⋯O and C—H⋯N hydrogen bonds into layers lying parallel to the ab plane.