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-chloro-4-methoxyphenyl)methyl]-5,6-dimethyl-2-(1,2,4-triazol-1-yl)thieno[2,3-d]pyrimidin-4-amine into molecular formula.
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C18H17ClN6OS
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