[{"from": "human", "value": "Provide a brief overview of this molecule. [C][Branch2][Ring1][Branch2][C@H1][Branch2][Ring1][Ring1][C@H1][Branch1][#C][C][=Branch1][C][=O][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1][O][O][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1]"}, {"from": "gpt", "value": "The molecule is tetraanion of D-ribulose 1,5-bisphosphate arising from deprotonation of all four phosphate OH groups; major species at pH 7.3. It is a conjugate base of a D-ribulose 1,5-bisphosphate."}]