[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is the (S)-enantiomer of ethosuximide. It is an enantiomer of a (R)-ethosuximide."}, {"from": "gpt", "value": "[C][C][C@][Branch1][O][C][C][=Branch1][C][=O][N][C][Ring1][=Branch1][=O][C]"}]