<i>catena</i>-Poly[[aquabis{4-[2-(2,4-dioxopentan-3-ylidene)hydrazin-1-yl]benzoato-κ<i>O</i>}copper(II)]-μ-<i>N</i>,<i>N</i>-diethylpyridine-3-carboxamide-κ<sup>2</sup><i>N</i><sup>1</sup>:<i>O</i>]
Acta crystallographica. Section E