pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.0	QSARToolbox	0	-1	O=[N+]([O-])[C@H]1C=Cc2ccccc21	O=[N+]([O-])[c-]1ccc2ccccc21	mol27870	O=[N+]([O-])C1C=Cc2ccccc21