[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is dianion of phosphoguanidinoacetic acid having anionic carboxylic acid and phosphoramido groups and a protonated imino group. It is a conjugate base of a phosphoguanidinoacetic acid."}, {"from": "gpt", "value": "[C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH1+1][=C][Branch1][C][N][N][P][=Branch1][C][=O][Branch1][C][O-1][O-1]"}]