preferred_name: a N-[omega-(9R)-hydroperoxy-(10E,12Z)-octadecadienoyloxy]-acylsphin-4E-enine => a N-[omega-(9R,10R)-epoxy-(13R)-hydroxy-(11E)-octadecenoyloxy]-acylsphing-4E-enine
preferred_name_lc: a n-[omega-(9r)-hydroperoxy-(10e,12z)-octadecadienoyloxy]-acylsphin-4e-enine => a n-[omega-(9r,10r)-epoxy-(13r)-hydroxy-(11e)-octadecenoyloxy]-acylsphing-4e-enine
label: a N-[omega-(9R)-hydroperoxy-(10E,12Z)-octadecadienoyloxy]-acylsphin-4E-enine => a N-[omega-(9R,10R)-epoxy-(13R)-hydroxy-(11E)-octadecenoyloxy]-acylsphing-4E-enine
label_lc: a n-[omega-(9r)-hydroperoxy-(10e,12z)-octadecadienoyloxy]-acylsphin-4e-enine => a n-[omega-(9r,10r)-epoxy-(13r)-hydroxy-(11e)-octadecenoyloxy]-acylsphing-4e-enine