pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.53	IUPAC digitized pKa	1	0	OCCNc1nccc[nH+]1,OCC[NH2+]c1ncccn1	OCCNc1ncccn1	mol7463	OCCNc1ncccn1