pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.6	OCHEM	2	1	O=C(c1ccc(NC2=[NH+]CCN2)cc1)c1ccc(NC2=[NH+]CCN2)cc1	O=C(c1ccc(NC2=NCCN2)cc1)c1ccc(NC2=[NH+]CCN2)cc1	mol18338	O=C(c1ccc(NC2=NCCN2)cc1)c1ccc(NC2=NCCN2)cc1