You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (6R,7R)-6-(3-bromo-4-methoxyphenyl)-N-(2-chlorophenyl)-3-methyl-6,7-dihydro-5H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine-7-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C19H17BrClN5O2S
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