pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
15.1	IUPAC digitized pKa	0	-1	OCCCO	[O-]CCCO	mol8991	OCCCO
15.4	OCHEM	0	-1	OCCCO	[O-]CCCO	mol8991	OCCCO
15.1000003814697	QSARToolbox	0	-1	OCCCO	[O-]CCCO	mol8991	OCCCO