[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][=Branch1][C][=C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an alpha,beta-unsaturated monocarboxylic acid that is acrylic acid in which the hydrogen at position 2 is substituted by an ethyl group. It has a role as a mammalian metabolite. It is functionally related to an acrylic acid. It is a conjugate acid of a 2-ethylacrylate."}]