L-Alaninamide, N-acetyl-L-alanyl-L-alanyl-N-(4-((7-((5-(acetylamino)-5-carboxy-1-oxopentyl)amino)-2-carboxy-7-(formylamino)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-en-3-yl)methoxy)-1-(3-((aminoiminomethyl)amino)propyl)-2-hydroxy-4-oxobutyl)-