preferred_name: 2'-deoxyxanthosine + NH4(+) => 2'-deoxyguanosine + H2O + H(+)
preferred_name_lc: 2'-deoxyxanthosine + nh4(+) => 2'-deoxyguanosine + h2o + h(+)
label: 2'-deoxyxanthosine + NH4(+) => 2'-deoxyguanosine + H2O + H(+)
label_lc: 2'-deoxyxanthosine + nh4(+) => 2'-deoxyguanosine + h2o + h(+)