Diethyl 4-meth­oxyoxalyl-3,5-diphenyl­pyrrolidine-2,2-dicarboxyl­ate

In the title compound, C₂₅H₂₇NO₇, the pyrrolidine ring exhibits an envelope conformation and the benzene rings form a dihedral angle of 33.47 (11)°. In the crystal, pairs of N—H...O hydrogen bonds link the mol­ecules into centrosymmetric dimers. Weak C—H...O inter­actions link the dimers into layers parallel to the bc plane.