You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1-[3-[7-[2-amino-5-(trifluoromethyl)pyrimidin-4-yl]imidazo[1,2-a]pyridin-3-yl]phenyl]-3-(2,2,2-trifluoroethyl)urea;hydrochloride is given. What is its corresponding molecular formula?
user
C21H16ClF6N7O
assistant