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 (5S,10bS)-9-bromo-2-(4-ethylphenyl)-5-(4-methylphenyl)-5,10b-dihydro-1H-pyrazolo[1,5-c][1,3]benzoxazine is given. What is its corresponding molecular formula?
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C25H23BrN2O
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