You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 6-[5-(1-deuteriocyclohexyl)-1-methyl-2-(2-methylphenyl)pyridin-1-ium-4-yl]-N,N-dimethylnaphthalen-2-amine .
user
C31H35N2+
assistant