You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 6-chloro-4-N-[5-[2-(2,4-difluorophenyl)ethyl]-1H-pyrazol-3-yl]-2-N-[1-(5-fluoropyrimidin-2-yl)ethyl]-1,3,5-triazine-2,4-diamine ?
user
C20H17ClF3N9
assistant