You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(6-bromopyridin-2-yl)-5-(trifluoromethyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyridine is the IUPAC name of a molecule. Please give its molecular formula.
user
C12H10BrF3N4
assistant