pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.5	IUPAC digitized pKa	0	-1	O=C1NC(=O)C(c2ccccc2)(c2ccccc2)C1=O	O=C1[N-]C(=O)C(c2ccccc2)(c2ccccc2)C1=O	mol12072	O=C1NC(=O)C(c2ccccc2)(c2ccccc2)C1=O