[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a synthetic tetrapeptide comprising Ac-Cha, Arg, Tic and Nle-NHCH2CH2Ph residues coupled in sequence."}, {"from": "gpt", "value": "[C][C][C][C][C@@H1][Branch1][S][C][=Branch1][C][=O][N][C][C][C][=C][C][=C][C][=C][Ring1][=Branch1][N][C][=Branch1][C][=O][C@@H1][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][N][Ring1][#Branch2][C][=Branch1][C][=O][C@H1][Branch1][#Branch2][C][C][C][N][=C][Branch1][C][N][N][N][C][=Branch1][C][=O][C@H1][Branch1][#Branch2][C][C][C][C][C][C][C][Ring1][=Branch1][N][C][=Branch1][C][=O][C]"}]