pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.45	Baltruschat ChEMBL	-1	-2	O=C([O-])C(=C/C=C/c1ccccc1)C(=O)O	O=C([O-])C(=C/C=C/c1ccccc1)C(=O)[O-]	mol18544	O=C(O)C(=C/C=C/c1ccccc1)C(=O)O