pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.8	IUPAC digitized pKa	1	0	O=C1C=CC(=O)C(=[NH+]Cc2ccccc2)C1	O=C1C=CC(=O)C(=NCc2ccccc2)C1	mol5772	O=C1C=CC(=O)C(=NCc2ccccc2)C1