You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1,4-dimethyl-2-(4,5,5,6,6-pentamethylbenzo[a]anthracen-3-yl)pyridin-1-ium;1,4-dimethyl-2-(3,5,5,6,6-pentamethylbenzo[g]phenanthren-4-yl)pyridin-1-ium;1,4-dimethyl-2-(4,5,5,6,6-pentamethylbenzo[g]phenanthren-3-yl)pyridin-1-ium;1,4-dimethyl-2-(1,11,11,12,12-pentamethylchrysen-2-yl)pyridin-1-ium .
user
C120H128N4+4
assistant