738618-03-6

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