Deschloro Venetoclax impurity

Chemical Name: 2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(4-((5,5-dimethyl-3,4,5,6-tetrahydro-[1,1'-biphenyl]-2-yl)methyl)piperazin-1-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide

Synonym: 4-{4-[(5,5-dimethyl-3,4,5,6-tetrahydro[1,1’-biphenyl]-2-yl)methyl]piperazin-1-yl}-N-(3-nitro-4- {[(oxan-4-yl)methyl]amino}benzene-1-sulfonyl)-2-[(1H-pyrrolo[2,3-b]pyridin-5-yl)oxy]benzamide