[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a natural product found in Chamaecyparis obtusa and Chamaecyparis obtusa var. formosana with data available."}, {"from": "gpt", "value": "[C][C][=C][C@H1][C@@H1][Branch1][#C][C][C][C][=Branch1][C][=C][C@H1][Ring1][#Branch1][C][C][Ring1][O][=O][C][Branch1][C][C][C]"}]