You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 5-tert-butyl-1-cyclopentyl-3-methyl-2-(2-methyl-5-phenylphenyl)benzimidazol-1-ium;5-tert-butyl-1,3-dimethyl-2-(2-methyl-5-phenylphenyl)benzimidazol-1-ium;5-tert-butyl-1-[2,6-di(propan-2-yl)phenyl]-3-methyl-2-(2-methyl-5-phenylphenyl)benzimidazol-1-ium;5-tert-butyl-3-methyl-2-(2-methyl-5-phenylphenyl)-1-naphthalen-1-ylbenzimidazol-1-ium;5-tert-butyl-3-methyl-2-(2-methyl-5-phenylphenyl)-1-phenylbenzimidazol-3-ium;5-tert-butyl-3-methyl-2-(2-methyl-5-phenylphenyl)-1-[4-phenyl-2,6-di(propan-2-yl)phenyl]benzimidazol-1-ium;5-tert-butyl-3-methyl-2-(2-methyl-5-phenylphenyl)-1-(4-phenylphenyl)benzimidazol-3-ium;1,5-ditert-butyl-3-methyl-2-(2-methyl-5-phenylphenyl)benzimidazol-1-ium .
user
C268H288N16+8
assistant