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-(3-cyanothiophen-2-yl)-2-[[5-[1-(2,4-dichlorophenoxy)ethyl]-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]acetamide into molecular formula.
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C19H17Cl2N5O2S2
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