pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.5	QSARToolbox	0	-1	C/C(=C\c1ccc(O)c(O)c1)C(=O)O	C/C(=C\c1ccc(O)c(O)c1)C(=O)[O-]	mol35220	C/C(=C\c1ccc(O)c(O)c1)C(=O)O