methyl 4-[4,5-bis(4-dimethylaminophenyl)-1-hexylimidazol-2-yl]benzoate methyl 4-[4,5-bis(4-dimethylaminophenyl)-1-hexyl-imidazol-2-yl]benzoate 4-[4,5-bis(4-dimethylaminophenyl)-1-hexyl-2-imidazolyl]benzoic acid methyl ester 4-[4,5-bis(4-dimethylaminophenyl)-1-hexyl-imidazol-2-yl]benzoic acid methyl ester