pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.5	IUPAC digitized pKa	-1	-2	O=C(N[O-])c1cc2ccccc2cc1O,O=C(NO)c1cc2ccccc2cc1[O-]	O=C(N[O-])c1cc2ccccc2cc1[O-]	mol11554	O=C(NO)c1cc2ccccc2cc1O