[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is the (S)-enantiomer of 2-methylbutan-1-ol. It is an enantiomer of a (R)-2-methylbutan-1-ol."}, {"from": "gpt", "value": "[C][C][C@H1][Branch1][C][C][C][O]"}]