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system
Provide the molecular formula for the IUPAC named substance sodium;(6R,7R)-7-[[2-[(4-ethyl-2,3-dioxopiperazine-1-carbonyl)amino]-2-phenylacetyl]amino]-7-formamido-8-oxo-3-(1,3,4-thiadiazol-2-ylsulfanylmethyl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate .
user
C26H25N8NaO8S3
assistant