SMILES: C1=C(O[C@H]([C@@H]([C@H]1O)O)O)C(=O)O
Description: The molecule is a uronic acid that is beta-D-glucuronic acid in which the hydroxy group at position 4 and the hydrogen at position 5 have been eliminated with the introduction of a double bond between positions 4 and 5. It is a uronic acid and an alpha,beta-unsaturated monocarboxylic acid.