preferred_name: an N-acylsphing-4-enine + H2O <=> sphing-4-enine + a fatty acid
preferred_name_lc: an n-acylsphing-4-enine + h2o <=> sphing-4-enine + a fatty acid
label: an N-acylsphing-4-enine + H2O <=> sphing-4-enine + a fatty acid
label_lc: an n-acylsphing-4-enine + h2o <=> sphing-4-enine + a fatty acid