You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [2-(4-chloro-2-fluoroanilino)-2-oxoethyl] (2S)-1-(4-chlorophenyl)sulfonylpyrrolidine-2-carboxylate into its molecular formula.
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C19H17Cl2FN2O5S
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