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 (4Z)-4-[[3-bromo-5-ethoxy-4-(5-nitropyridin-2-yl)oxyphenyl]methylidene]-1-phenylpyrazolidine-3,5-dione into its molecular formula.
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C23H17BrN4O6
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