1,1'-biphenyl, 2,2',4,4',6,6'-hexachloro- 2,2',4,4',6,6'-hexachlorobiphenyl InChI=1/C12H4Cl6/c13-5-1-7(15)11(8(16)2-5)12-9(17)3-6(14)4-10(12)18/h1-4