You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 4-[1-[6-chloro-1-[3-(difluoromethyl)phenyl]pyrazolo[3,4-d]pyrimidin-4-yl]-3-methylazetidin-3-yl]morpholine into molecular formula.
user
C20H21ClF2N6O
assistant