[{"from": "human", "value": "Provide a description of this molecule. [C][=N][C][=Branch2][Ring2][Ring1][=C][C][=Branch1][Ring2][=N][Ring1][=Branch1][N][Branch1][Branch1][C][=N][Ring1][=Branch1][C@H1][C@@H1][Branch1][S][C@@H1][Branch1][N][C@H1][Branch1][Ring2][O][Ring1][Branch1][C][=Branch1][C][=O][O][O][O][N]"}, {"from": "gpt", "value": "The molecule is a purine nucleoside having adenine as the nucleobase and a carboxy group at C-5'. It is functionally related to an adenine. It is a conjugate acid of an adenin-9-yl riburonosate(1-)."}]