pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.7	IUPAC digitized pKa	0	-1	O=C(O)c1ccnc(Cl)c1	O=C([O-])c1ccnc(Cl)c1	mol9862	O=C(O)c1ccnc(Cl)c1