You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-(3,4-dichloro-2-fluorophenyl)-11-methoxy-12-(1,2,3,6-tetrahydropyridin-4-yl)-2,4,6,8-tetrazatricyclo[7.3.1.05,13]trideca-1,5(13),6,9,11-pentaen-3-one into its molecular formula.
user
C21H16Cl2FN5O2
assistant