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system
Name the molecular formula for the molecule established as (4-fluorophenyl)methyl (E)-3-[5-chloro-1-[(3R)-1,1-dioxothiolan-3-yl]-3-methylpyrazol-4-yl]prop-2-enoate using the IUPAC nomenclature.
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C18H18ClFN2O4S
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