[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a natural product found in Pterocaulon virgatum, Scapania undulata, and other organisms with data available."}, {"from": "gpt", "value": "[C][C][=C][C][C][Branch1][Branch1][C][C][Ring1][=Branch1][C][=Branch1][O][=C][C][C][C][Ring1][=Branch2][Branch1][C][C][C][C]"}]