You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-N-[(R)-(3-chloro-4-fluorophenyl)-[3-(trifluoromethyl)-1H-pyrazol-5-yl]methyl]-2-methyl-3-oxopiperazine-1-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H16ClF4N5O2
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