[{"from": "human", "value": "Describe this molecule. [C][Branch1][O][C@H1][Branch1][#Branch1][C@H1][Branch1][Ring1][C][S][O][O][S]"}, {"from": "gpt", "value": "The molecule is the meso-diastereomer of 1,4-dimercaptobutane-2,3-diol; a sulfur-containing sugar derived from the monosaccharide erythrose; and an epimer of dithiothreitol. It has a role as a reducing agent."}]