AIDS-131937 AIDS131937 Ethyl 5,6-dimethyl-2-oxo-2,3-dihydro-1H-pyrrolo[1,2-a]imidazole-7-carboxylate NSC624983 {1H-Pyrrolo[1,2-a]imidazole-7-carboxylic} acid, 2,3-dihydro-5, 6-dimethyl-2-oxo-, ethyl ester