You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule N-[(1R)-1-[5-(2-anilino-2-oxoethyl)sulfanyl-4-methyl-1,2,4-triazol-3-yl]ethyl]-4-chlorobenzamide into molecular formula.
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C20H20ClN5O2S
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