You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-bromo-5-(trifluoromethyl)phenyl]-2-[2-(4-methoxyphenyl)-3-oxo-1,4-diazaspiro[4.5]dec-1-en-4-yl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H23BrF3N3O3
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