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Translate the chemical IUPAC name N-(2,5-dichlorophenyl)-2-[[4-methyl-5-(4,5,6,7-tetrahydro-1-benzothiophen-3-yl)-1,2,4-triazol-3-yl]sulfanyl]acetamide into its molecular formula.
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C19H18Cl2N4OS2
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