[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C@@H1][Branch2][Ring1][N][C@H1][Branch2][Ring1][=Branch1][O][C@H1][Ring1][Branch1][N][C][=N][C][=N][C][=Branch1][=Branch2][=C][Ring1][=Branch1][N][C][Ring1][=Branch2][=O][N][C][O][O]"}, {"from": "gpt", "value": "The molecule is a purine 2'-deoxyribonucleoside."}]