(5Z,8Z,11Z)-eicosatrienoate + O2 <=> (12S)-hydroperoxy-(5Z,8Z,10E)-eicosatrienoate
(5z,8z,11z)-eicosatrienoate + o2 <=> (12s)-hydroperoxy-(5z,8z,10e)-eicosatrienoate
(5Z,8Z,11Z)-eicosatrienoate + O2 <=> (12S)-hydroperoxy-(5Z,8Z,10E)-eicosatrienoate
(5z,8z,11z)-eicosatrienoate + o2 <=> (12s)-hydroperoxy-(5z,8z,10e)-eicosatrienoate