pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.49	AttenGpKa training set	0	-1	CCS(=O)(=O)CC(=O)O	CCS(=O)(=O)CC(=O)[O-]	mol22318	CCS(=O)(=O)CC(=O)O