Venetoclax Impurity 4

Chemical Name: 5-(5-(4-((4'-chloro-5,5-dimethyl-3,4,5,6-tetrahydro-[1,1'-biphenyl]-2-yl)methyl)piperazin-1-yl)-2-(((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)carbamoyl)phenoxy)-1H-pyrrolo[2,3-b]pyridine 7-oxide