Synonyms: (1S,9R)-tert-butyl 9-(1,3-dioxoisoindolin-2-yl)-10-oxooctahydro-1H-pyridazino[1,2-a][1,2]diazepine-1;(1S,9R)-tert-butyl 9-(1,3-dioxoisoindolin-2-yl)-10-oxooctahydro-1H-pyridazino[1,2-a][1,2]diazepine-1-carboxylate;(1S,9S)-tert-butyl 9-(1,3-dioxoisoindolin-2-yl)-10-oxooctahydro-1H-pyridazino[1,2-a][1,2]diazepine-1-carboxylate;(1S,9S)-9-(1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)octahydro-10-oxo-6H-pyridazino[1,2-a][1,2]diazepine-1-carboxylic acid tert-butyl ester