pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.74	IUPAC digitized pKa	0	-1	O=C1c2ccccc2C(=O)C1c1ccc2ccccc2c1	O=C1c2ccccc2C(=O)[C-]1c1ccc2ccccc2c1	mol12246	O=C1c2ccccc2C(=O)C1c1ccc2ccccc2c1