pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.77	IUPAC digitized pKa	0	-1	CCCCCCCC(O)(C(=O)O)C(=O)O	CCCCCCCC(O)(C(=O)[O-])C(=O)O	mol11271	CCCCCCCC(O)(C(=O)O)C(=O)O
4.7	IUPAC digitized pKa	-1	-2	CCCCCCCC(O)(C(=O)[O-])C(=O)O	CCCCCCCC(O)(C(=O)[O-])C(=O)[O-]	mol11271	CCCCCCCC(O)(C(=O)O)C(=O)O