You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-chloro-3-[2-[3-cyano-6-(4-methylphenyl)pyridin-2-yl]sulfanylpropanoylamino]benzoic acid into its molecular formula.
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C23H18ClN3O3S
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