You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2S,4R)-1-[2-[3-acetyl-5-(pyridin-3-ylamino)indol-1-yl]acetyl]-4-fluoro-N-(6-methylpyridin-2-yl)pyrrolidine-2-carboxamide into molecular formula.
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C28H27FN6O3
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