You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[(4E)-4-[[4-[(2R)-butan-2-yl]oxy-3-chlorophenyl]methylidene]-2,5-dioxoimidazolidin-1-yl]-N-(4-chlorophenyl)acetamide into its molecular formula.
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C22H21Cl2N3O4
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