[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][Branch1][C][O][P][=Branch1][C][=O][Branch1][C][O][O-1]"}, {"from": "gpt", "value": "The molecule is an organophosphonate oxoanion that is the conjugate base of hydroxymethylphosphonic acid, obtained by deprotonation of one of the phosphonate OH groups. It is a conjugate base of a hydroxymethylphosphonic acid."}]