英文别名9-bromo-8-hydroxy-6,6-dimethyl-11-oxo-5H-benzo[b]carbazole-3-carbonitrile; 9-Bromo-6,11-dihydro-8-hydroxy-6,6-dimethyl-11-oxo-5H-benzo[b]carbazole-3-carbonitrile; 9-bromo-8-hydroxy-6,6-dimethyl-11-oxo-5H,6H,11H-benzo[b]carbazole-3-carbonitrile; Aletinib Impurity 4; 5H-Benzo[b]carbazole-3-carbonitrile, 9-bromo-6,11-dihydro-8-hydroxy-6,6-dimethyl-11-oxo-