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-[(Z)-(5-bromo-2-prop-2-ynoxyphenyl)methylideneamino]-2-hydroxy-4-methoxybenzamide is given. What is its corresponding molecular formula?
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C18H15BrN2O4
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