You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(2S)-1-[(2'S,3R)-2'-cyano-2-oxospiro[1H-indole-3,4'-pyrrolidine]-1'-yl]-1-hydroxy-4-methylpentan-2-yl]-5-fluoro-N-methylpyridine-2-carboxamide into its molecular formula.
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C25H28FN5O3
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