pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
3.5	OCHEM	0	-1	O=C(O)CC(=O)C=NO	O=C([O-])CC(=O)C=NO	mol32495	O=C(O)CC(=O)C=NO