You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(4-acetyl-3,5-dimethylpyrazol-1-yl)-N-[[3-(4-fluorophenyl)pyrazolidin-4-yl]methyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H24FN5O2
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