pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
-0.66	IUPAC digitized pKa	2	1	""	CCOC(=O)NCc1c([N+](=O)[O-])[nH+]cn1C	mol6670	CCOC(=O)NCc1c([N+](=O)[O-])ncn1C