Venetoclax Acid Amide Dimer Impurity

Chemical Name: 2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-(4-(N-(2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(4-((4'-chloro-5,5-dimethyl-3,4,5,6-tetrahydro-[1,1'-biphenyl]-2-yl)methyl)piperazin-1-yl)benzoyl)sulfamoyl)-2-nitrophenyl)-4-(4-((4'-chloro-5,5-dimethyl-3,4,5,6-tetrahydro-[1,1'-biphenyl]-2-yl)methyl)piperazin-1-yl)-N-((tetrahydro-2H-pyran-4-yl)methyl)benzamide