You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 8-[3-butyl-4-(2-methylbut-3-enyl)phenyl]-6-ethanimidoyl-6-methyl-7,8,9,11-tetrahydro-5H-benzo[d][2]benzazepin-6-ium-10-one by IUPAC nomenclature, provide its molecular formula.
user
C32H41N2O+
assistant