[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a light tan to brown solid with a pleasant odor. Sinks in water. (USCG, 1999)"}, {"from": "gpt", "value": "[C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]