3-(2-diethylaminoethyl)-3-phenylpiperidine-2,6-dione 3-(2-diethylaminoethyl)-3-phenyl-piperidine-2,6-dione 3-(2-diethylaminoethyl)-3-phenyl-piperidine-2,6-quinone Phenglutarimide 3-[2-(diethylamino)ethyl]-3-phenylpiperidine-2,6-dione 2,6-Piperidinedione, 3-[2-(diethylamino)ethyl]-3-phenyl-