You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as [2-[(4E,6E,8E)-8-[3-benzyl-3-methyl-1-(3-oxopropyl)indol-2-ylidene]-2-methyl-1-phenylocta-4,6-dien-2-yl]phenyl]-propylazanium;ethane using the IUPAC nomenclature.
user
C49H67N2O+
assistant