You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(2-chloro-6-fluorophenyl)-N-(2,5-difluorophenyl)-6,7-dimethoxy-3,4-dihydro-1H-isoquinoline-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H20ClF3N2O3
assistant