pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.5	IUPAC digitized pKa	0	-1	ON=C(C(=NO)c1ccccc1)c1ccccc1	[O-]N=C(C(=NO)c1ccccc1)c1ccccc1	mol11950	ON=C(C(=NO)c1ccccc1)c1ccccc1