(2R)-2-Phenylglycyl-(2R)-2-[(4S)-4-carboxy-5,5-dimethyl-2-thiazolidinyl]glycyl-(2R)-2-phenylglycyl-(2R)-2-[(4S)-4-carboxy-5,5-dimethyl-2-thiazolidinyl]glycine,(2R,4S)-2-((R)-1-((R)-2-amino-2-phenylacetamido)-2-(((R)-2-(((R)-carboxy((2R,4S)-4-carboxy-5,5-dimethylthiazolidin-2-yl)methyl)amino)-2-oxo-1-phenylethyl)amino)-2-oxoethyl)-5,5-dimethylthiazolidine-4-carboxylic acid,Ampicillin