[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a methyl lactate that has R configuration. It is functionally related to a (R)-lactic acid. It is an enantiomer of a methyl (S)-lactate."}, {"from": "gpt", "value": "[C][C@H1][Branch1][#Branch1][C][=Branch1][C][=O][O][C][O]"}]