pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.5	OCHEM	0	-1	CCCCC=CC(=O)O	CCCCC=CC(=O)[O-]	mol33038	CCCCC=CC(=O)O
4.11999988555908	QSARToolbox	0	-1	CCCCC=CC(=O)O	CCCCC=CC(=O)[O-]	mol33038	CCCCC=CC(=O)O
4.88000011444092	QSARToolbox	0	-1	CCCCC=CC(=O)O	CCCCC=CC(=O)[O-]	mol33038	CCCCC=CC(=O)O