[{"from": "human", "value": "Provide a description of this molecule. [C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is a hydroxy monocarboxylic acid anion that is the conjugate base of lactic acid, arising from deprotonation of the carboxy group. It has a role as a human metabolite and an Escherichia coli metabolite. It is functionally related to a propionate. It is a conjugate base of a rac-lactic acid and a 2-hydroxypropanoic acid."}]