pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.8	Datawarrior	0	-1	C=C(CCCC)C(=O)O	C=C(CCCC)C(=O)[O-]	mol10003	C=C(CCCC)C(=O)O
4.8000002	OCHEM	0	-1	C=C(CCCC)C(=O)O	C=C(CCCC)C(=O)[O-]	mol10003	C=C(CCCC)C(=O)O
4.80000019073486	QSARToolbox	0	-1	C=C(CCCC)C(=O)O	C=C(CCCC)C(=O)[O-]	mol10003	C=C(CCCC)C(=O)O