SMILES: C[C@H]1[C@@H]([C@H]([C@H]([C@@H](O1)O[C@@H]2[C@@H]([C@H]([C@H](O[C@@H]2C(=O)[O-])O)O)O)O[C@@H]3[C@@H]([C@H]([C@H]([C@H](O3)C(=O)[O-])O)O)O)O)O
Description: The molecule is a polyanionic polymer obtained by deprotonation of the carboxy groups of alpha-D-galacturonosyl-[(1->2)-alpha-L-rhamnosyl-(1->4)-alpha-D-galacturonosyl]n; major species at pH 7.3. It is a carbohydrate acid anion and a polyanionic polymer.