You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-[2-[(2E)-2-[(5-bromo-2-hydroxyphenyl)methylidene]hydrazinyl]-2-oxoethyl]-2,3-dihydro-1,4-benzodioxine-6-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C18H16BrN3O5
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