9H-IMIDAZO(1,5-A)PYRROLO(2,1-C)(1,4)BENZODIAZEPINE-1-CARBOXYLIC ACID, 11,12,13,13A-TTRRRAHYDRO-8-BROMO-9-OXO-, 1,1-DIMETHYLETHYL ESTER, (S)- [ 84397-13-5 ]