[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][O][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][C][N][C][=Branch1][C][=O][N]"}, {"from": "gpt", "value": "The molecule is zwitterionic form of L-citrulline having an anionic carboxy group and a protonated amino group; major species at pH 7.3. It has a role as a human metabolite, an Escherichia coli metabolite, a plant metabolite and a Daphnia magna metabolite. It is a tautomer of a L-citrulline."}]