[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a lysine derivative found in proteins where the epsilon nitrogen of the amino acid residue is modified by a carboxyethyl group. This advanced glycation end product (AGE) is elevated in certain diseases and may be associated with aging."}, {"from": "gpt", "value": "[C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}]