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 9-methyl-2-[5-[4-methyl-3-(1-methylpyridin-1-ium-2-yl)phenyl]furan-2-yl]carbazole;9-methyl-2-[5-[4-methyl-3-(1-methylpyridin-1-ium-2-yl)phenyl]thiophen-2-yl]carbazole .
user
C60H50N4OS+2
assistant