label: (13S)-hydroperoxy-(9Z,11E,15Z)-octadecatrienoate => 12,13-epoxy-(9Z,11E,15Z)-octadecatrienoate + H2O
label_lc: (13s)-hydroperoxy-(9z,11e,15z)-octadecatrienoate => 12,13-epoxy-(9z,11e,15z)-octadecatrienoate + h2o