[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is the D-enantiomer of threitol. It has a role as a human metabolite. It is an enantiomer of a L-threitol."}, {"from": "gpt", "value": "[C][Branch1][O][C@H1][Branch1][#Branch1][C@@H1][Branch1][Ring1][C][O][O][O][O]"}]