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Name the molecular formula for the molecule established as 2,2,2-trichloroethyl (6R)-3-formyl-8-oxo-7-[(2-phenylsulfanylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate using the IUPAC nomenclature.
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C18H15Cl3N2O5S2
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