Ethylenediammonium sodium tetrakis[bis(ethylenediamine-κ<sup>2</sup><i>N</i>,<i>N</i>′)(oxalato-κ<sup>2</sup><i>O</i><sup>1</sup>,<i>O</i><sup>2</sup>)cobalt(III)] [pentahydrogen di(phosphatooctadecatungstate)] tetradecahydrate
Acta crystallographica. Section E