You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 8-bromo-N,3,4-trimethyl-6-(2-methyl-5-propoxyphenyl)-3a,4-dihydro-2H-[1,2,4]triazolo[4,3-a][1,4]benzodiazepin-11-ium-1-amine;chloride by IUPAC nomenclature, provide its molecular formula.
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C23H29BrClN5O
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