4H-[1,2,3]triazolo[1,5-a][1,4]benzodiazepine-3-carboxylic acid, 5,6-dihydro-4-oxo-, ethyl ester InChI=1/C13H12N4O3/c1-2-20-13(19)10-11-12(18)14-7-8-5-3-4-6-9(8)17(11)16-15-10/h3-6H,2,7H2,1H3,(H,14,18 ethyl 4-oxo-5,6-dihydro-4H-[1,2,3]triazolo[1,5-a][1,4]benzodiazepine-3-carboxylate