You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(1,5-dimethyl-3-oxo-2-phenylpyrazol-4-yl)-2-[1-[(2-fluorophenyl)methyl]indol-3-yl]-2-oxoacetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H23FN4O3
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