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 3-[2-(3,4-dihydro-2H-quinolin-1-yl)-2-oxoethyl]-5-thiophen-2-ylthieno[2,3-d]pyrimidin-4-one into molecular formula.
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C21H17N3O2S2
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