You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[3-(3,4-dimethoxyphenyl)sulfonyl-4,6-dimethyl-2-oxopyridin-1-yl]-N-(4-ethoxyphenyl)acetamide into its molecular formula.
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C25H28N2O7S
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