[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@@H1][C][C@H1][C@H1][Branch2][Ring1][#Branch1][C@@H1][Branch1][=C][C@][Branch1][#Branch2][C@H1][Ring1][#Branch1][C][=C][C][Ring1][Branch1][=O][C][O][C][=Branch1][C][=O][C][C][=Branch1][C][=C][C][=Branch1][C][=O][O][Ring2][Ring1][Ring1]"}, {"from": "gpt", "value": "The molecule is a sesquiterpene lactone that is 3,3a,4,4a,7a,8,9,9a-octahydroazuleno[6,5-b]furan-2,5-dione substituted by methyl groups at positions 4a and 8, a methylidene group at position 3 and an acetoxy group at position 4. Isolated from Inula hupehensis, it exhibits antineoplastic activity. It has a role as an apoptosis inducer, an immunomodulator, an antineoplastic agent and a plant metabolite. It is an acetate ester, an organic heterotricyclic compound, a sesquiterpene lactone, a cyclic ketone and a gamma-lactone."}]