60857-71-8

(6R)-3-[[[(S)-2-Amino-2-carboxy-1,1-dimethylethyl]thio]methyl]-7α-[[(R)-5-amino-5-carboxy-1-oxopentyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid