1-Pyrrolidineacetamide, N-(2,3,5,6-tetramethylphenyl)-, monohydrochloride 57115-99-8 N-(2,3,5,6-Tetramethylphenyl)-1-pyrrolidineacetamide hydrochloride omega-Pyrrolidino-2,3,5,6-tetramethylacetanilide hydrochloride