4′-Methyl-14′,19′-dioxa-4′-aza­spiro­[acenaphthyl­ene-1,5′-tetra­cyclo­[18.4.0.0(2,6).0(8,13)]tetra­cosa­ne]-1′(24′),8′,10′,12′,20′,22′-hexa­ene-2,7′(1H)-dione

In the title compound, C(33)H(29)NO(4), the acenaphthyl­ene ring system is essentially planar (r.m.s. deviation = 0.0290 Å). The pyrrolidine ring adopts a C-envelope conformation with a C atom displaced by 0.671 (2) Å from the mean-plane formed by the remaining ring atoms. The pyrrolidine ring is fused to acenaphthyl­ene ring system making a dihedral angle of 88.0 (7)°. In the crystal, mol­ecules are linked into R (2) (2)(9) dimers via C—H⋯N and C—H⋯O hydrogen bonds. Two C atoms act as donors to the same O atom acceptor, resulting in the formation of R (2) (1)(7) ring motifs. These two motifs combine to form hydrogen-bonded sheets running along the a- and b-axis directions.