(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 = (15R)-hydroperoxy-(5Z,8Z,11Z,13E)-eicosatetraenoate
(5z,8z,11z,14z)-eicosatetraenoate + o2 = (15r)-hydroperoxy-(5z,8z,11z,13e)-eicosatetraenoate
(5Z,8Z,11Z,14Z)-eicosatetraenoate + O2 = (15R)-hydroperoxy-(5Z,8Z,11Z,13E)-eicosatetraenoate
(5z,8z,11z,14z)-eicosatetraenoate + o2 = (15r)-hydroperoxy-(5z,8z,11z,13e)-eicosatetraenoate