[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@H1][C][C@@H1][Branch2][Branch1][=Branch2][C][C@][Branch2][Ring2][S][C@H1][Branch2][Ring2][C][C@H1][C@H1][Branch2][Ring1][C][C@@H1][Branch1][Branch1][C][Ring1][#Branch2][=O][O][C][=Branch1][C][=O][C][Branch1][C][C][C][C][=Branch1][C][=C][C][=Branch1][C][=O][O][Ring1][S][O][C][=Branch1][C][=O][C][Branch1][C][C][C][Branch1][C][C][O][O]"}, {"from": "gpt", "value": "The molecule is a germacranolide isolated from the aerial parts of Carpesium divaricatum. It exhibits cytotoxicity against the human tumor cells, A-549 (nonsmall cell lung), SK-OV-3 (ovary), SK-MEL-2 (skin), XF-498 (central nervous system) and HCT-15 (colon). It has a role as a metabolite and an antineoplastic agent. It is a cyclic ketone, a diol, a secondary alcohol, a tertiary alcohol and a germacranolide."}]