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-[(2,6-dichlorophenyl)methyl]-N-[1-(ethylamino)-1-oxopropan-2-yl]-4-(4-methoxyphenoxy)butanamide into molecular formula.
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C23H28Cl2N2O4
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