[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a diterpene lactone isolated from the whole plants of Ajuga ciliata that is ajugatakasin A in which both of the 2-methylbutenoate ester goups have been hydrogenated to the corresponding 2-methylbutanoates. It has a role as a plant metabolite. It is a diterpene lactone, an acetate ester, a butenolide and a spiro-epoxide."}, {"from": "gpt", "value": "[C][C][C@H1][Branch1][C][C][C][=Branch1][C][=O][O][C@@H1][C][C][C@][Branch1][Branch1][C][O][Ring1][Ring1][C@][Branch2][Ring2][P][C@H1][Ring1][Branch2][C@@][Branch1][#C][C@@H1][Branch1][O][C][C@@H1][Ring1][=Branch1][O][C][=Branch1][C][=O][C][C][Branch1][C][C][C][C@@H1][Branch1][O][C][=C][C][=Branch1][C][=O][O][C][Ring1][=Branch1][O][C][=Branch1][C][=O][C@@H1][Branch1][C][C][C][C][C][O][C][=Branch1][C][=O][C]"}]