preferred_name: an N-(fatty acyl)-L-serine + H2O => L-serine + a fatty acid
preferred_name_lc: an n-(fatty acyl)-l-serine + h2o => l-serine + a fatty acid
label: an N-(fatty acyl)-L-serine + H2O => L-serine + a fatty acid
label_lc: an n-(fatty acyl)-l-serine + h2o => l-serine + a fatty acid