N-[omega-(9R,10R)-epoxy-13-keto-(11E)-octadecenoyloxy]sphing-4-enine
n-[omega-(9r,10r)-epoxy-13-keto-(11e)-octadecenoyloxy]sphing-4-enine
An <em>N</em>-[ω-(acylyloxy)]acylsphin-4-enine in which the ω-<em>O</em>-acyl group is specified as (9<i>R</i>,10<i>R</i>)-epoxy-13-keto-(11<i>E</i>)-octadecenoyl (R represents a very long chain acyl group).