pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.5	AttenGpKa training set	0	-1	O=[N+]([O-])c1cc(O)c2[nH]ncc2c1[N+](=O)[O-]	O=[N+]([O-])c1cc([O-])c2[nH]ncc2c1[N+](=O)[O-]	mol26527	O=[N+]([O-])c1cc(O)c2[nH]ncc2c1[N+](=O)[O-]