[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a 2-hydroxydicarboxylic acid that is malic acid substituted by methyl groups at positions 2 and 3. It is functionally related to a malic acid."}, {"from": "gpt", "value": "[C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][C][Branch1][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][O]"}]