[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Callitropsis nootkatensis with data available."}, {"from": "gpt", "value": "[C][C][Branch2][Ring1][C][C@H1][C@@H1][Ring1][Ring1][C][=C][C@@H1][Branch1][Ring2][C][Ring1][=Branch1][C][=Branch1][C][=O][O][C]"}]