pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.56	IUPAC digitized pKa	0	-1	O=C([O-])CCc1[nH]cc[nH+]1	O=C([O-])CCc1ncc[nH]1	mol6655	O=C(O)CCc1ncc[nH]1
3.95	IUPAC digitized pKa	1	0	O=C(O)CCc1[nH]cc[nH+]1	O=C([O-])CCc1[nH]cc[nH+]1	mol6655	O=C(O)CCc1ncc[nH]1