label: a 5'-end 5'-phospho-2'-deoxyribonucleoside-DNA + H2O => a 5'-end dephospho-2'-deoxyribonucleoside-DNA + phosphate
label_lc: a 5'-end 5'-phospho-2'-deoxyribonucleoside-dna + h2o => a 5'-end dephospho-2'-deoxyribonucleoside-dna + phosphate