11-[(E)-2-Fluorobenzylidene[-8-(2-fluorophenyI)-14-hydroxy-6-thia-3,13-diazaheptacyclo[13.7.1.1(9,13).0(2,9).0(2,14).0(3,7)._0(19,23)[tetracosa-1(22),15(23),16,18,20-pentaen-10-one

In the title compound, C34H26F2N 2O2S, an intramolecular O - H⋯N hydrogen bond forms an S(5) ring motif. The piperidine ring adopts a chair conformation. The thia-zolidine ring and one of the pyrrolidine rings adopt envolope conformations with methylene C atoms at the flap, whereas the other pyrrolidine ring adopts a half-chair conformation. The fluoro-substituted benzene rings form dihedral angles of 32.25 (10) and 38.27 (10)°, respectively, with the mean plane of the dihydro-acenaphthyl-ene ring system [maximum deviation = 0.043 (2) Å]. The dihedral angle between the fluoro-substituted benzene rings is 64.13 (14)°. In the crystal, molecules are linked by weak C - H⋯O, C - H⋯F and C - H⋯S hydrogen bonds into a three-dimensional network. © 2012 International Union of Crystallography.