2,3,3',4,4',5,5'-Heptachloro-1,1'-biphenyl;2,3,3',4,4',5,5'-Heptachlorobiphenyl; 2,3,4,5,3',4',5'-Heptachlorobiphenyl;3,4,5,2',3',4',5'-Heptachlorobiphenyl; CB 189; PCB 189
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