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 N-methyl-4-(5-methylthiophen-2-yl)-4-oxo-N-[(4-oxo-3H-thieno[3,2-d]pyrimidin-2-yl)methyl]butanamide into its molecular formula.
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C17H17N3O3S2
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