pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.77999997138977	QSARToolbox	0	-1	O=C(O)c1cc(O)nc(O)c1	O=C([O-])c1cc(O)nc(O)c1	mol33744	O=C(O)c1cc(O)nc(O)c1