912639-14-6

1-Azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid,3-[[(1Z)-2-[4-[[(cyanomethyl)amino]carbonyl]-2-thiazolyl]ethenyl]thio]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-, monosodium salt, (4R,5S,6S)-