pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.12	IUPAC digitized pKa	1	0	c1cc2c([nH+]n1)CCC2,c1cc2c(n[nH+]1)CCC2	c1cc2c(nn1)CCC2	mol4571	c1cc2c(nn1)CCC2