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In the title compound, C30H30Cl2N2O3, the indole ring system is roughly planar, with a maximum deviation of 0.1039 (18) Å for the carbonyl C atom, and makes a dihedral angle of 86.61 (9)° with the mean plane of the pyrrolidine ring. This spiro pyrrolidine ring adopts an envelope conformation with the N atom at the flap position. The pyrrole ring of the indole ring system adopts a twisted conformation on the C—C(=O) bond. The molecular structure is stabilized by an intramolecular C—H...O hydrogen bond, which generates an S(6) ring motif, and a π–π interaction [centroid–centroid distance = 3.6577 (12) Å] involving the 2,4-dichlorophenyl ring and the benzyl ring. In the crystal, molecules are linked via C—H...O hydrogen bonds, forming C(9) chains running parallel to [10-1].