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