You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[4-[(2-fluorophenyl)methyl]piperazin-1-yl]-3-(4-iodo-3-methylpyrazol-1-yl)propan-1-one into its molecular formula.
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C18H22FIN4O
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