SMILES: C=CCO[C@@]1(C[C@H]([C@H]([C@H](O1)[C@H]2CO[C@@]3(C[C@H]([C@H]([C@H](O3)[C@@H](CO)O)O)O)C(=O)O2)O)O)C(=O)[O-].[Na+]
Description: The molecule is the sodium salt of a carbohydrate lactone formed from alpha-Kdo-(2->8)-alpha-Kdo-OAll by lactone formation between the carboxy group of the non-reducing alpha-Kdo residue and O-7 of the alpha-Kdo-OAll residue. It contains an alpha-Kdo-(2->8)-alpha-Kdo-OAll(1-) II(1),I(7)-lactone.