You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(3-bromo-1-methyl-4-oxopyrazolo[3,4-d]pyrimidin-5-yl)-N-(2,4,4-trimethylpentan-2-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H24BrN5O2
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