88552-32-3 9H-Imidazo(1,5-a)pyrrolo(2,1-c)(1,4)benzodiazepine-1-carboxylic acid, 11,12,13,13a-tetrahydro-9-oxo-, ethyl ester, (R)- Ethyl 11,12,13,13a-tetrahydro-9-oxo-9H-imidazo(1,5-a)pyrrolo(2,1-c)(1,4)benzodiazepine-1-carboxylate Ro 14-5974 Ro 145974