[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a hexynoic acid in which the triple bond is between the carbons at positions 5 and 6. It is a hexynoic acid and a terminal acetylenic compound."}, {"from": "gpt", "value": "[C][#C][C][C][C][C][=Branch1][C][=O][O]"}]