You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-(6-bromo-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)ethyl]-2-(2-methylimidazol-1-yl)acetamide;2,2,2-trifluoroacetic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H15BrF3N7O3
assistant