You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-N'-[2-(3,5-dimethyl-1-phenylpyrazol-4-yl)acetyl]-2-(2-fluorophenoxy)propanehydrazide is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H23FN4O3
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