N′-(2-Hydroxy-5-nitrobenzylidene)-2-(1H-indol-3-yl)acetohydrazide

The molecule of the title compound, C17H14N4O4, uses its amide –NH– group to form a hydrogen bond to the amido –C(=O)– group of an adjacent molecule to furnish a linear chain structure. The hydroxy group forms an intramolecular hydrogen bond; the indolyl –NH– unit does not engage in any strong hydrogen-bonding interactions.