1 HYM (4z)-4-(2-amino-5-oxo-3,5-dihydro-4h-imidazol-4-ylidene)-2,3-dichloro-4,5,6,7-tetrahydropyrrolo[2,3-C]azepin-8(1h)-one 1.000 2 DBQ Debromohymenialdisine 0.900 3 HMD 4-(5-amino-4-oxo-4h-pyrazol-3-yl)-2-bromo-4,5,6,7-tetrahydro-3ah-pyrrolo[2,3-C]azepin-8-one 0.857