Cefoxitin Dimer Impurity 2

Chemical Name: (7S)-3-((carbamoyloxy)methyl)-7-(2-(5-(2-(((7S)-3-((carbamoyloxy)methyl)-2-carboxy-7-methoxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-7-yl)amino)-2-oxo-1-(thiophen-2-yl)ethyl)thiophen-2-yl)acetamido)-7-methoxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid