[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a pentenoic acid having the double bond at position 2. It is a pentenoic acid and an alpha,beta-unsaturated monocarboxylic acid."}, {"from": "gpt", "value": "[C][C][/C][=C][/C][=Branch1][C][=O][O]"}]