pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
8.5	QSARToolbox	-1	-2	O=C1C(=NNc2ccccc2)C=C(S(=O)(=O)[O-])c2ccccc21	O=C1C(=N[N-]c2ccccc2)C=C(S(=O)(=O)[O-])c2ccccc21	mol37959	O=C1C(=NNc2ccccc2)C=C(S(=O)(=O)O)c2ccccc21