pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.83	IUPAC digitized pKa	0	-1	O=C[C@@H]1CCCC1=O	O=C[C-]1CCCC1=O	mol9550	O=CC1CCCC1=O
5.8299999	OCHEM	0	-1	O=C[C@@H]1CCCC1=O	O=C[C-]1CCCC1=O	mol9550	O=CC1CCCC1=O