[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule appears as needles (from ligroin) or a dark gray solid. "}, {"from": "gpt", "value": "[C][N][Branch1][C][C][C][=C][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][O]"}]