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 4-(4,4-dimethyl-2,5-dioxoimidazolidin-1-yl)-N-[(2-methoxypyridin-4-yl)methyl]butanamide into molecular formula.
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C16H22N4O4
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