pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.5	QSARToolbox	0	-1	CCP(=O)(CC)CCCC(=O)O	CCP(=O)(CC)CCCC(=O)[O-]	mol34430	CCP(=O)(CC)CCCC(=O)O