2,5-Diphenylvaleric acid 2-diethylaminoethyl ester hydrochloride 2-Diethylaminoethyl 2,5-diphenylvalerate hydrochloride 35047-67-7 Benzenepentanoic acid, alpha-phenyl-, 2-(diethylamino)ethyl ester, hydrochloride alpha-Phenylbenzenepentanoic acid 2-(diethylamino)ethyl ester hydrochloride