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)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,D-glucopyranuronosyl and 2-deoxy-6-O-sulfo-2-(sulfoamino)-alpha-D-glucopyranose joined in sequence by (1->4) linkages with alpha, alpha, and beta configuration, respectively. Sequence: DUA2S-GlcNS6S-GlcA-GlcNS6S. It is an amino tetrasaccharide, a heparin tetrasaccharide and an oligosaccharide sulfate.