You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[[(1R)-1-(3,5-difluorophenyl)ethyl]amino]-N-(2',4'-dioxo-1'-propylspiro[1,3-dihydroindene-2,5'-imidazolidine]-5-yl)acetamide by IUPAC nomenclature, provide its molecular formula.
user
C24H26F2N4O3
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