[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a tripeptide zwitterion resulting from the transfer of a proton from the carboxy group to the amino group of Gly-Gly-Ile. Major microspecies at pH 7.3. It is a tautomer of a Gly-Gly-Ile."}, {"from": "gpt", "value": "[C][C][C@H1][Branch1][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][C][NH3+1]"}]