(11S)-hydroperoxy-(9Z,12Z)-octadecadienoate <=> (13R)-hydroperoxy-(9Z,11E)-octadecadienoate
(11s)-hydroperoxy-(9z,12z)-octadecadienoate <=> (13r)-hydroperoxy-(9z,11e)-octadecadienoate
(11S)-hydroperoxy-(9Z,12Z)-octadecadienoate <=> (13R)-hydroperoxy-(9Z,11E)-octadecadienoate
(11s)-hydroperoxy-(9z,12z)-octadecadienoate <=> (13r)-hydroperoxy-(9z,11e)-octadecadienoate