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