1,2,3,5-tetrachloro-4-(2,3,6-trichlorophenyl)benzene;52663-65-7;1,1'-Biphenyl, 2,2',3,3',4,6,6'-heptachloro;1,1'-Biphenyl, 2,2',3,3',4,6,6'-heptachloro-;2,2',3,3',4,6,6'-Heptachloro-1,1'-biphenyl
1,2,3,5-tetrachloro-4-(2,3,6-trichlorophenyl)benzene