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 6-ethyl-3-(3-methoxyphenyl)-5-methyl-2-(2-oxo-2-pyrrolidin-1-ylethyl)sulfanylthieno[2,3-d]pyrimidin-4-one into molecular formula.
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C22H25N3O3S2
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