pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.3	OCHEM	0	-1	C/C(O)=C/CC(=O)O	C/C(O)=C/CC(=O)[O-]	mol31732	C/C(O)=C/CC(=O)O