You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[2-(2,6-difluorophenyl)-5-phenyl-1H-imidazol-4-yl]-2-methyl-1-(2-methylpropyl)benzimidazole;methanesulfonic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H28F2N4O3S
assistant