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 (4-oxo-3H-thieno[3,2-d]pyrimidin-2-yl)methyl 2-(3-methyl-4-propan-2-ylphenoxy)acetate into molecular formula.
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C19H20N2O4S
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