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In the title compound, C 31 H 30 N 4 O, the central pyrrolidine ring adopts an envelope conformation with the methyl­ene C atom being the flap. The quinoxaline and indane rings are each planar, having r.m.s. deviations of 0.030 and 0.050 Å, respectively. The pyrrolidine ring mean plane forms dihedral angles of 88.25 (1) and 83.76 (1)° with the quinoxaline and indane rings, respectively. Intra­molecular C—H⋯O and C—H⋯N inter­actions are observed. In the crystal, C—H⋯π inter­actions lead to helical supra­molecular chains along the  b- axis direction.

1′,1′′-Dimethyl-4′-(4-methylphenyl)dispiro[11H-indeno[1,2-b]quinoxaline-11,2′-pyrrolidine-3′,3′′-piperidin]-4′′-one