The molecule is a hydroxy fatty acid ascaroside anion that is the conjugate base of oscr#29, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an oscr#29.
(E)-17-[(2R,3R,5R,6S)-3,5-dihydroxy-6-methyloxan-2-yl]oxyheptadec-2-enoate