pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
1.1	IUPAC digitized pKa	0	-1	O=C1C(O)=C(Br)C(=O)C(Br)=C1Br	O=C1C([O-])=C(Br)C(=O)C(Br)=C1Br	mol9606	O=C1C(O)=C(Br)C(=O)C(Br)=C1Br