pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.48	IUPAC digitized pKa	0	-1	COCC([N+](=O)[O-])[N+](=O)[O-]	COC[C-]([N+](=O)[O-])[N+](=O)[O-]	mol9052	COCC([N+](=O)[O-])[N+](=O)[O-]
3.56	IUPAC digitized pKa	0	-1	COCC([N+](=O)[O-])[N+](=O)[O-]	COC[C-]([N+](=O)[O-])[N+](=O)[O-]	mol9052	COCC([N+](=O)[O-])[N+](=O)[O-]