pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.49	IUPAC digitized pKa	-1	-2	O=C([O-])C[NH+](CCOc1ccccc1)CC(=O)[O-]	O=C([O-])CN(CCOc1ccccc1)CC(=O)[O-]	mol6122	O=C(O)CN(CCOc1ccccc1)CC(=O)O