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system
Name the molecular formula for the molecule established as sodium;(4S,5R,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3-(5-methylsulfinylimidazo[5,1-b][1,3]thiazol-2-yl)-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate using the IUPAC nomenclature.
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C16H16N3NaO5S2
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