[{"from": "human", "value": "Generate a molecule based on this description. The molecule is an organophosphate oxoanion that is the dianionic form of O-phosphoserine having anionic phosphate and carboxy functions and a protonated amino group. It is a conjugate base of an O-phosphoserine."}, {"from": "gpt", "value": "[C][Branch1][#Branch2][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1]"}]