SMILES: C1=C(O[C@H]([C@@H]([C@H]1O)OS(=O)(=O)O)O[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)NS(=O)(=O)O)O[C@H]3[C@@H]([C@H]([C@@H](O[C@H]3C(=O)O)O[C@@H]4[C@H](O[C@@H]([C@@H]([C@H]4O)NS(=O)(=O)O)O)COS(=O)(=O)O)OS(=O)(=O)O)O)COS(=O)(=O)O)C(=O)O
Description: The molecule is a heparin tetrasaccharide consisting of 4-deoxy-2-O-sulfo-L-threo-hex-4-enopyranuronosyl, 2-deoxy-6-O-sulfo-2-(sulfoamino)-D-glucopyranosyl, 2-O-sulfo-L-idopyranuronosyl and 2-deoxy-6-O-sulfo-2-(sulfoamino)-alpha-D-glucopyranose joined in sequence by alpha-(1->4) linkages. Sequence: DUAp2S(1-4)-a-D-GlcNpS6S (1-4)-a-L-IdoAp2S(1-4)-a-D-GlcNpS6S. It is a heparin tetrasaccharide, an amino tetrasaccharide and an oligosaccharide sulfate.