1H-Pyrrole-3-carboxamide, 2,5-dihydro-N-((4-chlorophenyl)methyl)-2,2,5,5-tetramethyl-, monohydrochloride 2,5-Dihydro-N-((4-chlorophenyl)methyl)-2,2,5,5-tetramethyl-1H-pyrrole-3-carboxamide HCl 93968-91-3