pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
10.03	IUPAC digitized pKa	1	0	OC1(O)CNC=[NH+]C1	OC1(O)CN=CNC1	mol7519	OC1(O)CN=CNC1