pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
12.0	IUPAC digitized pKa	-1	-2	O=C([O-])c1ccccc1N=Nc1c(O)ccc2ccccc12	O=C([O-])c1ccccc1N=Nc1c([O-])ccc2ccccc12	mol12166	O=C(O)c1ccccc1N=Nc1c(O)ccc2ccccc12