organic compounds
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In the title compound, C15H15NO4, the quinoline ring system and one of the malonate side chains are essentially coplanar (r.m.s. deviation = 0.0297 Å). The two malonate C—C(=O)—O—CH3 side chains are oriented at right angles [89.68 (8)°] with respect to each other. The crystal packing is stabilized by weak non-classical intermolecular C—HO hydrogen bonds, which link the molecules into dimers about inversion centers.