pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.63000011444092	QSARToolbox	0	-1	O=C1NC(=O)C(=O)C(=O)N1	O=C1[N-]C(=O)C(=O)C(=O)N1	mol29502	O=C1NC(=O)C(=O)C(=O)N1
6.63	AttenGpKa training set	0	-1	O=C1NC(=O)C(=O)C(=O)N1	O=C1[N-]C(=O)C(=O)C(=O)N1	mol29502	O=C1NC(=O)C(=O)C(=O)N1