pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
2.71	OCHEM	0	-1	O=C1CC(=O)C(=O)CC1=O	O=C1[CH-]C(=O)C(=O)CC1=O	mol31690	O=C1CC(=O)C(=O)CC1=O