The molecule is an oxo-ETE anion that is the conjugate base of 9-oxo-ETE, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a 9-oxo-ETE.
(5Z,7E,11Z,14Z)-9-oxoicosa-5,7,11,14-tetraenoate