pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.7	IUPAC digitized pKa	0	-1	CC[C@](C)(O[C@@](C)(CC)C(=O)O)C(=O)O	CC[C@](C)(O[C@@](C)(CC)C(=O)O)C(=O)[O-]	mol11270	CCC(C)(OC(C)(CC)C(=O)O)C(=O)O
5.41	IUPAC digitized pKa	-1	-2	CC[C@](C)(O[C@@](C)(CC)C(=O)O)C(=O)[O-]	CC[C@](C)(O[C@@](C)(CC)C(=O)[O-])C(=O)[O-]	mol11270	CCC(C)(OC(C)(CC)C(=O)O)C(=O)O