pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.0	IUPAC digitized pKa	0	-1	O=Cc1ccc([N+](=O)[O-])c(O)c1	O=Cc1ccc([N+](=O)[O-])c([O-])c1	mol10086	O=Cc1ccc([N+](=O)[O-])c(O)c1