You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
17-(2-fluorophenyl)-8,16-dimethyl-8,16,17-triazatetracyclo[7.7.1.02,7.010,15]heptadeca-2,4,6,10,12,14-hexaene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H20FN3
assistant