pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.49	IUPAC digitized pKa	1	0	[NH3+]c1ccc(O)c(/C=C\C(=O)O)c1	[NH3+]c1ccc(O)c(/C=C\C(=O)[O-])c1	mol10987	Nc1ccc(O)c(/C=C\C(=O)O)c1