preferred_name: an alpha-L-fucoside + H2O => L-fucose + an alcohol
preferred_name_lc: an alpha-l-fucoside + h2o => l-fucose + an alcohol
label: an alpha-L-fucoside + H2O => L-fucose + an alcohol
label_lc: an alpha-l-fucoside + h2o => l-fucose + an alcohol