label: a 5'-end NAD(+)-phospho-ribonucleoside in snoRNA + H2O = a 5'-end phospho-ribonucleoside in snoRNA + NAD(+) + H(+)
label_lc: a 5'-end nad(+)-phospho-ribonucleoside in snorna + h2o = a 5'-end phospho-ribonucleoside in snorna + nad(+) + h(+)