738618-83-2

1-Azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid,6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-3-[[4-[(2-thiazolylamino)carbonyl]-5-thiazolyl]thio]-, (4-nitrophenyl)methyl ester, (4R,5S,6S)-