pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.15	OCHEM	0	-1	O=[N+]([O-])c1cc[14c](O)cc1	O=[N+]([O-])c1cc[14c]([O-])cc1	mol31733	O=[N+]([O-])c1cc[14c](O)cc1