[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C@H1][Branch1][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][C][N]"}, {"from": "gpt", "value": "The molecule is a tripeptide composed of glycine, glycine and L-isoleucine residues joined in sequence. It has a role as a metabolite. It is a tautomer of a Gly-Gly-Ile zwitterion."}]