pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
12.2	IUPAC digitized pKa	-1	-2	N=C(N)Nc1ccc([O-])cc1,[N-]=C(N)Nc1ccc(O)cc1	[N-]=C(N)Nc1ccc([O-])cc1	mol6199	N=C(N)Nc1ccc(O)cc1