[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is an organic sodium salt having lactate as the counterion. It has a role as a food preservative and a food acidity regulator. It is an organic sodium salt and a lactate salt. It contains a lactate."}, {"from": "gpt", "value": "[C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O].[Na+1]"}]