[{"from": "human", "value": "Describe this molecule. [C][Branch1][O][C][O][P][=Branch1][C][=O][Branch1][C][O][O][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N]"}, {"from": "gpt", "value": "The molecule is the L-enantiomer of O-phosphohomoserine. It has a role as an Escherichia coli metabolite. It is a conjugate acid of an O-phosphonato-L-homoserine(2-)."}]