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 2-[(4,5-dicyclopropyl-1,2,4-triazol-3-yl)sulfanylmethyl]-6-methyl-5-(2-methylbutyl)-3H-thieno[2,3-d]pyrimidin-4-one into molecular formula.
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C21H27N5OS2
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