5,5'-([2,2'-bipyridine]-5,5'-diylbis(ethane-2,1-diyl))dipicolinaldehyde

1,1'-(([2,2'-bipyridine]-5,5'-diylbis(ethane-2,1-diyl))bis(pyridine-5,2-diyl))bis(N-hexylmethanimine)