[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a natural product found in Tanacetum parthenium, Pinus densiflora, and Abies sibirica with data available."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][O][C@H1][C][C@@H1][C][C][C@][Ring1][=Branch1][Branch1][Branch2][C][Ring1][Branch1][Branch1][C][C][C][C]"}]