pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.9	IUPAC digitized pKa	0	-1	NC(=O)n1c(O)nc(O)c1CO	NC(=O)n1c(O)nc([O-])c1CO,NC(=O)n1c([O-])nc(O)c1CO	mol9401	NC(=O)n1c(O)nc(O)c1CO