{2-[(<i>S</i>)-({2-[(<i>S</i>)-1-Benzylpyrrolidine-2-carboxamido]phenyl}(phenyl)methylene)amino]-4-hydroxybutanoato-κ<sup>4</sup><i>N</i>,<i>N</i>′,<i>N</i>′′,<i>O</i>}nickel(II)
Acta crystallographica. Section E