You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4,4-difluoro-N-[1-[4-(1,2,4-triazol-1-yl)phenyl]ethyl]pyrrolidine-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H17F2N5O
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