pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.71	IUPAC digitized pKa	0	-1	O=[N+]([O-])NCCC([N+](=O)[O-])[N+](=O)[O-]	O=[N+]([O-])[N-]CCC([N+](=O)[O-])[N+](=O)[O-]	mol9056	O=[N+]([O-])NCCC([N+](=O)[O-])[N+](=O)[O-]