pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
0.45	OCHEM	1	0	Brc1c[nH+]cc(Br)c1Br	Brc1cncc(Br)c1Br	mol6589	Brc1cncc(Br)c1Br