(6R,7R)-7-{2-[2-(aminomethyl)phenyl]acetamido}-3-({[1-(carboxymethyl)-1H-1,2,3,4-tetrazol-5-yl]sulfanyl}methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

(6R,7R)-7-{2-[2-(aminomethyl)phenyl]acetamido}-3-({[1-(carboxymethyl)-1H-1,2,3,4-tetrazol-5-yl]sulfanyl}methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid