7'-(Naphthalen-1-yl)-5"-[(naphthalen-2-yl) methylidene]-1',3',5',6',7',7a'-hexa-hydrodispiro[acenaphthene-1,5'pyrrolo[1,2-c] thiazole-6',3"-piperidine]-2(1H),4"-dione

In the title compound, C 43H 34N 2O 2S, the six-membered piperidine ring adopts a half-chair conformation. The five-membered thia-zole ring adopts a slightly twisted envelope conformation and the pyrrole ring adopts an envelope conformation; in each case, the C atom linking the rings is the flap atom. The mol-ecular structure features inter- and intra-molecular C - H⋯O inter-actions. Furthermore, the crystal packing is stabilized by four inter-molecular C - H⋯π inter-actions.