SMILES: C[C@H]1[C@@H](C[C@H]([C@@H](O1)OCCCCCCCCCC/C=C/C(=O)[O-])O)O
Description: The molecule is a hydroxy fatty acid ascaroside anion that is the conjugate base of oscr#21, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an oscr#21.