diphenyl-[1-(2-phenylmethoxyethyl)-1-azoniabicyclo[2.2.2]octan-4-yl]methanol bromide
[1-(2-benzyloxyethyl)quinuclidin-1-ium-4-yl]-diphenyl-methanol bromide
[1-(2-benzyloxyethyl)-4-quinuclidin-1-iumyl]-diphenylmethanol bromide
[1-(2-benzoxyethyl)quinuclidin-1-ium-4-yl]-diphenyl-methanol bromide