You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[2-[2-(3,4-dimethoxyphenyl)-1,3-thiazol-4-yl]ethyl]-2-(4-methyl-6-oxopyrimidin-1-yl)acetamide into molecular formula.
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C20H22N4O4S
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