pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.4	IUPAC digitized pKa	0	-1	O=C([O-])c1c[nH+]ccc1Cl	O=C([O-])c1cnccc1Cl	mol9861	O=C(O)c1cnccc1Cl