14653-46-4 Copper, bis[dihydrogen 5-[(4-carboxy-3,5-dimethyl-2H-pyrrol-2-ylidene)methyl]-2,4-dimethylpyrrole-3-carboxylato]-, tetraethyl ester Copper, bis[ethyl 5-[[4-(ethoxycarbonyl)-3,5-dimethyl-2H-pyrrol-2-ylidene]methyl]-2,4-dimethyl-1H-pyrrole-3-carboxylato-N1,N5]- NSC17447