[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a carboxyalkyl phosphate."}, {"from": "gpt", "value": "[C][=C][Branch1][#Branch2][C][Branch1][=Branch1][C][=Branch1][C][=O][O][O][O][P][=Branch1][C][=O][Branch1][C][O][O]"}]