[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a member of purines and a nucleoside analogue."}, {"from": "gpt", "value": "[C][=C][Branch2][Ring1][=C][C][Branch2][Ring1][=Branch2][C][Branch2][Ring1][Ring2][C][Ring1][Branch1][N][C][=N][C][=C][Branch1][=Branch2][N][=C][N][=C][Ring1][=Branch1][Ring1][=Branch2][N][O][O][C][O]"}]