[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a carboxyalkyl sulfate. It is functionally related to a rac-lactic acid."}, {"from": "gpt", "value": "[C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][O][S][=Branch1][C][=O][=Branch1][C][=O][O]"}]