pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.1	IUPAC digitized pKa	1	0	CCCON=Cc1ccc[nH+]c1,CCCO[NH+]=Cc1cccnc1	CCCON=Cc1cccnc1	mol3814	CCCON=Cc1cccnc1