pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.52	OCHEM	0	-1	O=[N+]([O-])c1ccc2c(O)[nH]nc2c1	O=[N+]([O-])c1ccc2c([O-])[nH]nc2c1	mol32248	O=[N+]([O-])c1ccc2c(O)[nH]nc2c1