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 2-[(E)-3-(2-bromophenyl)prop-2-enoyl]-7-ethyliminocyclohepta-2,4-dien-1-one is given. What is its corresponding molecular formula?
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C18H16BrNO2
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