Crystal structure of dimethyl 3,3′-[(3-fluoro­phenyl)methyl­ene]bis­(1H-indole-2-carboxyl­ate)

In the title compound, the two indole ring systems are approximately perpendicular to one another, making a dihedral angle of 87.8 (5)°. In the crystal, pairs of N—H...O hydrogen bonds link the mol­ecules into the inversion dimers, which are further linked by N—H...O hydrogen bonds into supra­molecular chains propagating along the b-axis direction.