The molecule is a 15-HETE(1-) that is the conjugate base of 15(R)-HETE(1-), obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a 15(R)-HETE.
(5Z,8Z,11Z,13E,15R)-15-hydroxyicosa-5,8,11,13-tetraenoate