pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.49	IUPAC digitized pKa	0	-1	CCOC(=O)CC(=O)C(=O)OCC	CCOC(=O)[CH-]C(=O)C(=O)OCC	mol10459	CCOC(=O)CC(=O)C(=O)OCC