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-[2-[2-[(2-bromophenyl)methylidene]hydrazinyl]-2-oxoethyl]naphthalene-1-carboxamide is given. What is its corresponding molecular formula?
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C20H16BrN3O2
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