[{"from": "human", "value": "Could you provide a description of this molecule? [C][C@@H1][Branch1][Ring2][O][Ring1][Ring1][C@@H1][Branch1][#Branch2][C@@H1][Branch1][=Branch1][C@@H1][C][O][Ring1][Ring1][O][O]"}, {"from": "gpt", "value": "The molecule is a bifunctional hexitol derivative with potential antineoplastic activity. Dianhydrogalactitol alkylates and cross-links DNA via an epoxide group during all phases of the cell cycle, resulting in disruption of DNA function and cell cycle arrest. (NCI04)"}]