(11R)-hydroperoxy-(9Z,12Z,15Z)-octadecatrienoate <=> (9S)-hydroperoxy-(10E,12Z,15Z)-octadecatrienoate
(11r)-hydroperoxy-(9z,12z,15z)-octadecatrienoate <=> (9s)-hydroperoxy-(10e,12z,15z)-octadecatrienoate