You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-N-(1,1-dioxothiolan-3-yl)-2-N-[2-(2-fluorophenyl)ethyl]-1-N-methylcyclopropane-1,2-dicarboxamide into its molecular formula.
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C18H23FN2O4S
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