[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a leucine derivative obtained by replacement of one of the amino hydrogens of leucine by a methyl group. It is a leucine derivative, a secondary amino compound and an amino acid."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C]"}]