preferred_name: 2-amino-4,7-dihydroxypteridine + chemical entity => 2-amino-4-hydroxypteridine + O2
preferred_name_lc: 2-amino-4,7-dihydroxypteridine + chemical entity => 2-amino-4-hydroxypteridine + o2
label: 2-amino-4,7-dihydroxypteridine + chemical entity => 2-amino-4-hydroxypteridine + O2
label_lc: 2-amino-4,7-dihydroxypteridine + chemical entity => 2-amino-4-hydroxypteridine + o2