preferred_name: sphinganine + a fatty acid => an N-acylsphinganine + H2O
preferred_name_lc: sphinganine + a fatty acid => an n-acylsphinganine + h2o
label: sphinganine + a fatty acid => an N-acylsphinganine + H2O
label_lc: sphinganine + a fatty acid => an n-acylsphinganine + h2o