pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.83	IUPAC digitized pKa	0	-1	O=c1cccc2[nH]onc1-2	O=c1cccc2[n-]onc1-2	mol9616	O=c1cccc2[nH]onc1-2