You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (E)-3-[3-(4-bromophenyl)-6-ethoxy-1-benzofuran-5-yl]-N-[3-(dimethylamino)propyl]but-2-enamide ?
user
C25H29BrN2O3
assistant