preferred_name: 2,4-dihydroxypteridine + NH4(+) => 2-amino-4-hydroxypteridine + H2O + H(+)
preferred_name_lc: 2,4-dihydroxypteridine + nh4(+) => 2-amino-4-hydroxypteridine + h2o + h(+)
label: 2,4-dihydroxypteridine + NH4(+) => 2-amino-4-hydroxypteridine + H2O + H(+)
label_lc: 2,4-dihydroxypteridine + nh4(+) => 2-amino-4-hydroxypteridine + h2o + h(+)