[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a tetrapeptide composed of L-aspartic acid, L-phenylalanine and two L-valine units joined in sequence by peptide linkages. It has a role as a metabolite. It is functionally related to a L-aspartic acid, a L-phenylalanine and a L-valine."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C@@H1][Branch2][Ring1][Ring1][C][=Branch1][C][=O][N][C@@H1][Branch1][=Branch1][C][Branch1][C][C][C][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][N][C][=Branch1][C][=O][C@H1][Branch1][#Branch1][C][C][=Branch1][C][=O][O][N]"}]