[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C@H1][Branch1][Branch1][NH2+1][C][Ring1][Branch1][C][=Branch1][C][=O][N][C][C@@H1][Branch1][#Branch2][C][C@H1][Ring1][Branch1][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is a dipeptide zwitterion obtained by transfer of a proton from the carboxy to the amino terminus of Pro-Hyp. Major species at pH 7.3. It has a role as a human metabolite and a biomarker. It is a tautomer of a Pro-Hyp."}]