[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@H1][C@@H1][Branch2][Ring2][=Branch2][C@H1][Branch2][Ring2][Ring2][C@H1][Branch2][Ring1][#C][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@@H1][C@@H1][Branch2][Ring1][C][C@H1][Branch1][=C][C@H1][Branch1][#Branch2][O][C@@H1][Ring1][=Branch1][C][=Branch1][C][=O][O-1][O][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a polyanionic polymer obtained by deprotonation of the carboxy groups of [(1->2)-alpha-L-rhamnosyl-(1->4)-alpha-D-galacturonosyl]n; major species at pH 7.3. It is a polyanionic polymer and a carbohydrate acid anion."}]