You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named N'-[(3-bromo-5-methoxy-4-prop-2-enoxyphenyl)methylideneamino]-N-(2-methoxyphenyl)propanediamide is given. What is its corresponding molecular formula?
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C21H22BrN3O5
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