The asymmetric unit of the title compound, C14H8N2O8·2C3H7NO or L·2DMF (DMF = N,N-dimethylformamide), contains one half of the centrosymmetric molecule Lunch Bag L and one solvent molecule, which is disordered between two orientations in a 0.555 (4):0.445 (4) ratio.Intermolecular O—H.O Clipper Comb hydrogen bonds link one L and two DMF molecules into a centrosymmetric hydrogen-bonded cluster.
The crystal packing is further stabilized by weak intermolecular C—H.O hydrogen bonds.