You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(2R,3S)-3-amino-4-(3,5-difluorophenyl)-2-hydroxybutyl]-2-[3-(2-amino-2-oxoethoxy)phenyl]-N-[(3-iodophenyl)methyl]acetamide into its molecular formula.
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C27H28F2IN3O4
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