pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
5.2	IUPAC digitized pKa	1	0	c1ccc2c(c1)c[nH+]c1ncccc12,c1ccc2c(c1)cnc1[nH+]cccc12	c1ccc2c(c1)cnc1ncccc12	mol5046	c1ccc2c(c1)cnc1ncccc12