pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.8	IUPAC digitized pKa	0	-1	O=C(C=NO)c1cccnc1	O=C(C=N[O-])c1cccnc1	mol10105	O=C(C=NO)c1cccnc1