[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a pentose."}, {"from": "gpt", "value": "[C][C@@H1][Branch1][S][C@@H1][Branch1][N][C][Branch1][Ring2][O][Ring1][Branch1][Branch1][Ring1][C][O][O][O][O]"}]