1,2-Cyclobutanedicarboxylic acid, mono(1-((dimethylamino)methyl)-2-(2-(2- phenylethyl)phenoxy)ethyl) ester, hydrochloride 2-((3-Dimethylamino-2-(2-carboxycyclobutylcarbonyloxy))propoxy)bibenzyl hydrochloride 86819-25-2