preferred_name: a nucleoside 5'-phosphate + H2O => a nucleoside + phosphate
preferred_name_lc: a nucleoside 5'-phosphate + h2o => a nucleoside + phosphate
label: a nucleoside 5'-phosphate + H2O => a nucleoside + phosphate
label_lc: a nucleoside 5'-phosphate + h2o => a nucleoside + phosphate