pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.33	IUPAC digitized pKa	1	0	O=[N+]([O-])c1cccc2[nH]c[nH+]c12	O=[N+]([O-])c1cccc2[nH]cnc12	mol4534	O=[N+]([O-])c1cccc2[nH]cnc12