Cefoperazone Impurity 39

(6R,7R) -7- ((R) -2- (4-ethyl-2,3-dioxopiperazine-1-carboxamido) -2- (4- (((6R,7R) -7- ((R) -2- (4-ethyl-2,3-dioxopiperazine-1-carboxamido) -2- (4- (((6R,7R) -7- ((R) -2- (4-ethyl-2,3-dioxopiperazine-1-carboxamido) -2- (4-hydroxyphenyl) acetamido) -3- (((1-methyl-1H-tetrazol-5-yl) thio) methyl) -8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carbonyl) oxy) phenyl) acetamido) -3- (((1-methyl-1H-tetrazol-5-yl) thio) methyl) -8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carbonyl) oxy) phenyl) acetamido) -3- (((1-methyl-1H-tetrazol-5-yl) thio) methyl) -8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid