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 N-(2-bromo-4-propan-2-ylphenyl)-N-ethyl-5-methyl-3-pentan-3-yltriazolo[4,5-d]pyrimidin-7-amine is given. What is its corresponding molecular formula?
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C21H29BrN6
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