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 (E)-3-(3-ethoxy-6,7,8,9-tetrahydrodibenzofuran-2-yl)-N-(2-methylquinolin-5-yl)but-2-enamide .
user
C28H28N2O3
assistant