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 tert-butyl 2-bromo-4,4-dimethyl-7,8-dihydro-5H-thieno[2,3-d]azepine-6-carboxylate is given. What is its corresponding molecular formula?
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C15H22BrNO2S
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