[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an O-phosphonatooxyserine(2-) that is the dianion of O-phospho-D-serine. It has a role as a human metabolite. It is a conjugate base of an O-phospho-D-serine."}, {"from": "gpt", "value": "[C][Branch1][#Branch2][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1]"}]