pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
-1.21	IUPAC digitized pKa	1	0	c1ccc(-c2coc[nH+]2)cc1	c1ccc(-c2cocn2)cc1	mol6765	c1ccc(-c2cocn2)cc1