[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a valine derivative that is valine in which the amino group has been replaced by a hydroxy group. It has a role as a human metabolite. It is functionally related to an isovaleric acid. It is a conjugate acid of a 2-hydroxy-3-methylbutyrate."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][O]"}]