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