pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
10.02	IUPAC digitized pKa	1	0	CCNCC[NH2+]CCNCC,CCNCCNCC[NH2+]CC	CCNCCNCCNCC	mol5856	CCNCCNCCNCC
8.72	IUPAC digitized pKa	2	1	CC[NH2+]CCNCC[NH2+]CC	CCNCC[NH2+]CCNCC,CCNCCNCC[NH2+]CC	mol5856	CCNCCNCCNCC
3.67	IUPAC digitized pKa	3	2	CC[NH2+]CC[NH2+]CC[NH2+]CC	CC[NH2+]CCNCC[NH2+]CC	mol5856	CCNCCNCCNCC