(13R)-hydroperoxy-(9Z,11E)-octadecadienoate <=> (9S)-hydroperoxy-(10E,12Z)-octadecadienoate
(13r)-hydroperoxy-(9z,11e)-octadecadienoate <=> (9s)-hydroperoxy-(10e,12z)-octadecadienoate
(13R)-hydroperoxy-(9Z,11E)-octadecadienoate <=> (9S)-hydroperoxy-(10E,12Z)-octadecadienoate
(13r)-hydroperoxy-(9z,11e)-octadecadienoate <=> (9s)-hydroperoxy-(10e,12z)-octadecadienoate