You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4,5-bis(1,1-dideuterio-2-methylpropyl)-1-methyl-2-(2-methylphenyl)pyridin-1-ium;5-(1,1-dideuterio-2-methylpropyl)-1,4-dimethyl-2-[2-methyl-4-(trideuteriomethyl)phenyl]pyridin-1-ium;1,4-dimethyl-2-(2-methylphenyl)-5-(2-methylpropyl)pyridin-1-ium;1-methyl-2-(2-methylphenyl)-4,5-bis(2-methylpropyl)pyridin-1-ium The above is the IUPAC name of a molecule. Write its molecular formula.
user
C79H110N4+4
assistant