[{"from": "human", "value": "Provide a description of this molecule. [C][=N][C][=C][Branch2][Ring1][Branch1][N][Ring1][Branch1][C@H1][C@@H1][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][O][O][O][N][=C][Branch1][=Branch1][N][C][Ring1][S][=O][N]"}, {"from": "gpt", "value": "The molecule is a purine nucleoside in which guanine is attached to ribofuranose via a beta-N(9)-glycosidic bond. It has a role as a fundamental metabolite. It is a purines D-ribonucleoside and a member of guanosines. It is functionally related to a guanine."}]