7-[(2S)-2-amino-2-carboxy-ethyl]sulfanyl-2-[[(1S)-2,2-dimethylcyclopro panecarbonyl]amino]hept-2-enoic acid: (5R)-3-[2-(aminomethylideneamino )ethylsulfanyl]-6-(1-hydroxyethyl)-7-oxo-1-azabicyclo[3.2.0]hept-2-ene -2-carboxylic acid | 1-Azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid, 6-((1R)-1-hydroxyethyl)-3-((2-((iminomethyl)amino)ethyl)thio)-7-oxo-, (5R,6S)-, mixt. with (2Z)-7-(((2R)-2-amino-2-carboxyethyl)thio)-2-((((1S)-2,2-dimethylcyclopropyl)carbonyl)amino)-2-heptenoic acid |