diphenhydramine2-(benzhydryloxy)-N,N-dimethylethylamine2-diphenylmethoxy-N,N-demthylethanamineN-(2-(diphenylmethoxy)ethyl)-N,N-dimethylamineO-benzhydryldimethylaminoethanolalpha-(2-dimethylaminoethoxy)diphenylmethanebeta-dimethylaminoethanol diphenylmethyl etherbeta-dimethylaminoethyl benzhydryl ether