[{"from": "human", "value": "Provide a description of this molecule. [C][=Branch2][Ring1][Branch1][=C][Branch1][P][C][=Branch1][=N][=C][Branch1][=Branch2][C][=Branch1][Branch1][=C][Ring1][=Branch1][Cl][Cl][Cl][Cl][Cl][C][=C][Branch1][P][C][=Branch1][=N][=C][Branch1][=Branch2][C][=Branch1][Branch1][=C][Ring1][=Branch1][Cl][Cl][Cl][Cl][Cl]"}, {"from": "gpt", "value": "The molecule is a polychlorobiphenyl that is biphenyl in which all of the hydrogens are replaced by chlorines. It is a polychlorobiphenyl and a member of pentachlorobenzenes."}]