pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
4.16	IUPAC digitized pKa	1	0	C1=[NH+]NC2(C1)CCCC2,C1=N[NH2+]C2(C1)CCCC2	C1=NNC2(C1)CCCC2	mol6871	C1=NNC2(C1)CCCC2