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 identified by 3-(2-chlorophenyl)-6-(2,4-difluorophenoxy)-1-methyl-4-methylsulfonylpyrazolo[3,4-d]pyrimidine ?
user
C19H13ClF2N4O3S
assistant