31728-02-6 NSC292424 Tin, [[2,2'-[1,2-ethanediylbis(nitrilomethylidyne)]bis[phenolato]](2-)-N,N',O,O']dimethyl-, (OC-6-22)- [N,N'-Ethylenebis(salicylideneiminato)]dimethyltin(IV)