[{"from": "human", "value": "Generate a molecule based on this description. The molecule is the beta-isomer of hexachlorocyclohexane. It has a role as a persistent organic pollutant. It is an organochlorine pesticide and a hexachlorocyclohexane."}, {"from": "gpt", "value": "[C][Branch2][Ring1][Branch1][C][Branch1][P][C][Branch1][=N][C][Branch1][=Branch2][C][Branch1][Branch1][C][Ring1][=Branch1][Cl][Cl][Cl][Cl][Cl][Cl]"}]