You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1H-imidazole;5-methyl-1H-imidazole;1,2,3,4,5-pentamethylimidazol-1-ium;1,2,4,5-tetramethylimidazole;1,3,4-trimethylimidazol-1-ium;diiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H52I2N12
assistant