You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 3-[[[4-(difluoromethoxy)-3-methoxyphenyl]methyl-methylamino]methyl]-5-methyl-1-phenylimidazolidine-2,4-dione into its molecular formula.
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C21H23F2N3O4
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