pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.68	IUPAC digitized pKa	0	-1	CC(=O)Nc1ccc(O)c(/C=C\C(=O)O)c1	CC(=O)Nc1ccc(O)c(/C=C\C(=O)[O-])c1	mol11570	CC(=O)Nc1ccc(O)c(/C=C\C(=O)O)c1