preferred_name: sphing-4-enine + octadecanoate => N-octadecanoylsphing-4-enine + H2O
preferred_name_lc: sphing-4-enine + octadecanoate => n-octadecanoylsphing-4-enine + h2o
label: sphing-4-enine + octadecanoate => N-octadecanoylsphing-4-enine + H2O
label_lc: sphing-4-enine + octadecanoate => n-octadecanoylsphing-4-enine + h2o