113597-47-0 BRN 5576894 Ethyl 2,4-dimethyl-3H-(1,4)diazepine(2,3-g)indole-9-carbonate Pyrrolo(2,3-g)-1,5-benzodiazepine-9-carboxylic acid, 3,10-dihydro-2,4-dimethyl-, ethyl ester