[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a diterpene lactone."}, {"from": "gpt", "value": "[C][C][C][C][O][C][=Branch1][C][=O][C][C][C][Branch2][Ring2][C][C][C][C][Ring1][=Branch1][C][=Branch1][C][=O][C][C][C][Ring1][#Branch1][Branch1][P][C][C][Branch1][=Branch1][O][C][Ring1][=Branch1][=O][C][=C][O][C][=C][Ring1][Branch1][C][O]"}]