You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-[2-amino-4-(4-bromo-2-fluorophenyl)-3-cyano-7,7-dimethyl-5-oxo-6,8-dihydro-4H-quinolin-1-yl]acetamide .
user
C20H20BrFN4O2
assistant