You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-(6-bromo-9-methyl-3,4-dihydro-2H-1,5-benzodioxepin-8-yl)-1-methylpyrazole-3-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
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C15H15BrN2O4
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