[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a natural product found in Pterocaulon serrulatum and Betula pendula with data available."}, {"from": "gpt", "value": "[C][C][Branch2][Ring1][Ring2][C][C@H1][C@H1][Ring1][Ring2][C][C][/C][=Branch1][Branch2][=C][/C][C][C][Ring1][=Branch2][=C][/C][O][C]"}]