label: N-octadecanoylsphing-4-enine + phosphocholine + H(+) => N-(octadecanoyl)-sphing-4-enine-1-phosphocholine + H2O
label_lc: n-octadecanoylsphing-4-enine + phosphocholine + h(+) => n-(octadecanoyl)-sphing-4-enine-1-phosphocholine + h2o