You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [2-(2,4-difluoroanilino)-2-oxoethyl] (2S)-1-(4-methylphenyl)sulfonylpyrrolidine-2-carboxylate into its molecular formula.
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C20H20F2N2O5S
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