1′′-Allyl-5′′-(4-meth­oxy­benzyl­idene)-7′-(4-methoxy­phen­yl)-1′,3′,5′,6′,7′,7a′-hexa­hydro­dispiro­[ace­naphthyl­ene-1,5′-pyrrolo­[1,2-c][1,3]thia­zole-6′,3′′-piperidine]-2,4′′(1H)-dione

In the title compound, C(39)H(36)N(2)O(4)S, the piperidine ring adopts a twisted half-chair conformation. In the pyrrolo­thia­zole fused-ring system, the pyrrole ring adopts an envelope conformation (with the C atom bound to the thia­zole ring being the flap atom) and the thia­zole ring also exhibits an envelope conformation (with the N atom bound to the pyrrole ring as the flap). The mol­ecular structure features a weak intra­molecular C—H⋯O inter­action. In the crystal, a C—H⋯O inter­action forms a linear chain along the diagonal of the ac plane, generating a C(14) graph-set motif. A weak C—H⋯π inter­action also occurs.