(4S,5R,6S)-6-((R)-1-Hydroxy-ethyl)-4-methyl-7-oxo-3-([1,3,4]thiadiazol-2-ylsulfanylmethyl)-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-methoxy-benzyl ester

Sodium (1S,5R,6S)-2-Acetoxymethyl-6-<(R)-1-hydroxyethyl>-1-methylcarbapen-2-em-3-carboxylate