(6′R*,7′R*)-7′-(1,3,-Diphenyl-1H-pyrazol-4-yl)-1,2,5′,6′,7′,7a',3′′,4′′-octa­hydro-1′H,2′′H-dispiro­[acenaphthyl­ene-1,5′-pyrrolo­[1,2-c][1,3]thia­zole-6′,3′′-[1]benzopyran]-2,4′′-dione

In the title compound, C₄₀H₂₉N₃O₃S, the pyran ring adopts a sofa conformation, the thia­zolidine ring adopts a twisted conformation and the pyrrolidine ring adopts an envelope conformation with the N atom as the flap. The pyrazole ring is essentially planar [maximum deviation = 0.002 (2) Å] and forms dihedral angles of 4.8 (1) and 39.0 (1)°, respectively, with the benzene rings attached to the N and C atoms. The acenapthylene ring system is approximately planar [maximum deviation = 0.058 (2) Å] and forms dihedral angles of 85.9 (1) and 48.5 (1)°, respectively, with the pyrollothia­zole and chromene ring systems. The mol­ecular conformation is stabilized by three weak intra­molecular C—H...O hydrogen bonds, which generate one S(8) and two S(6) ring motifs. In the crystal, pairs of C—H...O hydrogen bonds link centrosymmetrically related mol­ecules into dimers, generating R₂²(14) ring motifs. The crystal packing also features pairs of C—H...π inter­actions, which link the dimers into a supra­molecular chain along the b axis.