You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[5-(4-methoxyphenyl)-4-oxo-3-prop-2-enylthieno[2,3-d]pyrimidin-2-yl]sulfanyl-N-[[(2R)-oxolan-2-yl]methyl]acetamide into its molecular formula.
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C23H25N3O4S2
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