pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
7.8	IUPAC digitized pKa	0	-1	Oc1ccccc1/N=N/c1ccccc1O	[O-]c1ccccc1/N=N/c1ccccc1O	mol787	Oc1ccccc1/N=N/c1ccccc1O
11.5	IUPAC digitized pKa	-1	-2	[O-]c1ccccc1/N=N/c1ccccc1O	[O-]c1ccccc1/N=N/c1ccccc1[O-]	mol787	Oc1ccccc1/N=N/c1ccccc1O