dodecanoate + sphing-4-enine => N-dodecanoylsphing-4-enine + H2O
dodecanoate + sphing-4-enine => n-dodecanoylsphing-4-enine + h2o
dodecanoate + sphing-4-enine => N-dodecanoylsphing-4-enine + H2O
dodecanoate + sphing-4-enine => n-dodecanoylsphing-4-enine + h2o