You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-chloro-4-(trifluoromethyl)phenyl]-3-[3-(5-pyridin-3-yl-1H-pyrrolo[2,3-b]pyridine-3-carbonyl)phenyl]urea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H17ClF3N5O2
assistant