You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name N-[[(5S)-3-[4-[3-[(butoxyamino)methyl]pyrrol-1-yl]-3-fluorophenyl]-2-oxo-1,3-oxazolidin-5-yl]methyl]acetamide into its molecular formula.
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C21H27FN4O4
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