In the title compound, C24H22N2O3, the indoline and pyrrole-fused naphthoquinone units Door Knobs are both essentially planar [r.m.s.deviations = 0.042 (3) and 0.
133 (3) Å, respectively].The pyrrole ring adopts a C-envelope conformation.The dihedral angle between the mean planes of the two five-membered rings is 89.94 (9)°.The Mouthguard O atoms deviate from the mean planes of the pyrrolidine and naphthalene rings by 0.
0311 (2), 0.2570 (2) and 0.1669 (2) Å.In the crystal, C—H.O interactions generate dimers with R22(16) and R22(18) graph-set motifs.
The carbonyl O atom is involved in bifurcated hydrogen bonding.C—H.π interactions also occur.