pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.45	IUPAC digitized pKa	0	-1	CC(C)(OC(C)(C)C(=O)O)C(=O)O	CC(C)(OC(C)(C)C(=O)O)C(=O)[O-]	mol10474	CC(C)(OC(C)(C)C(=O)O)C(=O)O
5.32	IUPAC digitized pKa	-1	-2	CC(C)(OC(C)(C)C(=O)O)C(=O)[O-]	CC(C)(OC(C)(C)C(=O)[O-])C(=O)[O-]	mol10474	CC(C)(OC(C)(C)C(=O)O)C(=O)O