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-[(2-chlorophenyl)methyl]-2-[[4-methyl-5-[(1-methylpyrrol-2-yl)methyl]-1,2,4-triazol-3-yl]sulfanyl]acetamide into molecular formula.
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C18H20ClN5OS
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