You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 6,6-diethyl-10-(4-hex-1-enylphenyl)-7-pyrido[1,2-b]isoindol-5-ium-6-ylidenebenzo[a]quinolizin-5-ium ?
user
C41H40N2+2
assistant