You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2,5-dimethyl-7-(1,1,2,2,2-pentafluoroethyl)imidazo[4,5-b]pyridin-3-yl]ethanol is the IUPAC name of a molecule. Please give its molecular formula.
user
C12H12F5N3O
assistant