4,4'-Methylenedibenzoic acid bis(2-dimethylaminoethyl) ester hydrochloride Benzoic acid, 4,4'-methylenedi-, bis(2-dimethylaminoethyl) ester, hydrochloride Bis(dimethylaminoethyl) 4,4'-diphenylmethanedicarboxylate hydrochloride DH3848300