You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 3-[[2-[3-(3,4-dimethoxyphenyl)-5-oxo-1,2,4-oxadiazol-4-yl]acetyl]amino]-N,N-dimethylbenzamide into its molecular formula.
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C21H22N4O6
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