[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a member of the class of pentachlorobenzenes that is benzene in which five of the hydrogens are replaced by chlorines. Now classed as a persistent organic pollutant under the Stockholm Convention. It has a role as a persistent organic pollutant."}, {"from": "gpt", "value": "[C][=C][Branch1][P][C][=Branch1][=N][=C][Branch1][=Branch2][C][=Branch1][Branch1][=C][Ring1][=Branch1][Cl][Cl][Cl][Cl][Cl]"}]