pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
9.24	IUPAC digitized pKa	1	0	OCCNCC[NH2+]CCO	OCCNCCNCCO	mol5837	OCCNCCNCCO
6.26	IUPAC digitized pKa	2	1	OCC[NH2+]CC[NH2+]CCO	OCCNCC[NH2+]CCO	mol5837	OCCNCCNCCO