Synonyms: 9H-Imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carboxylicacid, 8-bromo-11,12,13,13a-tetrahydro-9-oxo-, 1,1-dimethylethyl ester, (S)-;9H-Imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carboxylic acid, 8-bromo-11,12,13,13a-tetrahydro-9-oxo-, 1,1-dimethylethyl ester, (13aS)-;Ro 16-6028;Ro 16-6028/000;tert-Butyl (13aS)-8-bromo-9-oxo-11,12,13,13a-tetrahydro-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carboxylate;8-Bromo-7-oxo-3b,4,5,6-tetrahydro-7H-2,6a,11b-triaza-benzo[g]cyclopenta[e]azulene-3-carboxylic acid tert-butyl ester;