You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(9Z,10E)-10-(aminomethylidene)-9-ethylidene-7-(1-methoxyethenyl)-11-propyl-6H-azepino[1,2-a]indol-3-yl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H28N2O2
assistant