11-[(E)-Benzyl-idene]-14-hy-droxy-8-phenyl-3,13-diaza-hepta-cyclo-[13.7.1.1.0.0.0.0]tetra-cosa-1(22),15,17,19(23),20-pentaen-10-one.

In the title compound, C(35)H(30)N(2)O(2), 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)° with the terminal phenyl rings. The dihedral angle between the two terminal phenyl rings is 55.27†(5)°. 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 intra-molecular O-H⋯N hydrogen bond generates an S(6) ring. In the crystal structure, inversion dimers linked by pairs of C-H⋯O hydrogen bonds generate R(2) (2)(18) loops within sheets of mol-ecules lying parallel to the bc plane.