[{"from": "human", "value": "Provide a description of this molecule. [C][C][Branch1][Ring1][C][=O][O][C][Branch1][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an oxo carboxylic acid that is propanal substituted by a carboxyethoxy group at position 2. It has a role as a metabolite. It is an oxo carboxylic acid, an ether and an aldehyde."}]