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)-2-[4-(3-chloro-2-methyl-N-methylsulfonylanilino)butanoyl-[(4-fluorophenyl)methyl]amino]-N-(2-methylpropyl)butanamide into molecular formula.
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C27H37ClFN3O4S
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