[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule appears as white to yellow powder or flakes. Musty odor. The gamma isomer is known as lindane, a systemic insecticide. Toxic by ingestion or inhalation."}, {"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]"}]