11-[(E)-Benzylidene]-14-hydroxy-8-phenyl-3,13-diazaheptacyclo[13.7.1.19,13.02,9.02,14.03,7.019,23]tetracosa-1(22),15,17,19(23),20-pentaen-10-one

In the title compound, C35H30N2O2, the piperidine ring adopts a chair conformation and the pyrrolidine ring adopts an envelope conformation. The naphthalene ring makes dihedral angles of 24.56 (3) and 36.13 (4)degrees with the terminal phenyl rings. The dihedral angle between the two terminal phenyl rings is 55.27 (5)degrees. One of the C atoms in the pyrrolidine ring is disordered over two sites, with a refined occupany ratio of 0.670 (3):0.330 (3). An intramolecular O-H center dot center dot center dot N hydrogen bond generates an S(6) ring. In the crystal structure, inversion dimers linked by pairs of C-H center dot center dot center dot O hydrogen bonds generate R-2(2)(18) loops within sheets of molecules lying parallel to the bc plane.