pka_value	data_source	charge_state_pre	charge_state_post	microspecies_pre	microspecies_post	molid	smiles
12.25	IUPAC digitized pKa	1	0	C=CCn1cccnc1=[NH+]CCC,C=CCn1ccc[nH+]c1=NCCC	C=CCn1cccnc1=NCCC	mol6993	C=CCn1cccnc1=NCCC