pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.96	IUPAC digitized pKa	0	-1	O=C(O)CCC(CCC(=O)O)([N+](=O)[O-])[N+](=O)[O-]	O=C([O-])CCC(CCC(=O)O)([N+](=O)[O-])[N+](=O)[O-]	mol10230	O=C(O)CCC(CCC(=O)O)([N+](=O)[O-])[N+](=O)[O-]
3.52	IUPAC digitized pKa	-1	-2	O=C([O-])CCC(CCC(=O)O)([N+](=O)[O-])[N+](=O)[O-]	O=C([O-])CCC(CCC(=O)[O-])([N+](=O)[O-])[N+](=O)[O-]	mol10230	O=C(O)CCC(CCC(=O)O)([N+](=O)[O-])[N+](=O)[O-]