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 3-[2-(2-bromo-5-methoxyphenyl)ethyl]-1-ethyl-7-(trifluoromethyl)-5H-1-benzazepine-2,4-dione .
user
C22H21BrF3NO3
assistant