pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.5	IUPAC digitized pKa	0	-1	CON=C1C=CC(=NO)C(C)=C1	CON=C1C=CC(=N[O-])C(C)=C1	mol10658	CON=C1C=CC(=NO)C(C)=C1