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 N-(2,4-dimethylphenyl)-2-[5-(4-methylphenyl)-4-oxo-3-prop-2-enylthieno[2,3-d]pyrimidin-2-yl]sulfanylpropanamide into molecular formula.
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C27H27N3O2S2
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