pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
6.92	IUPAC digitized pKa	0	-1	COc1nc[nH]c(=O)n1	COc1nc[n-]c(=O)n1	mol9163	COc1nc[nH]c(=O)n1