pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.02	Datawarrior	0	-1	O=CCCCC(=O)O	O=CCCCC(=O)[O-]	mol12454	O=CCCCC(=O)O
5.01999998092651	QSARToolbox	0	-1	O=CCCCC(=O)O	O=CCCCC(=O)[O-]	mol12454	O=CCCCC(=O)O