You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name (5-chlorothiophen-2-yl)-(2,5-diamino-4-methylsulfanylthieno[2,3-d]pyrimidin-6-yl)methanone into its molecular formula.
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C12H9ClN4OS3
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