The seven-membered ring of C23H24N3O2+.Cl- has a conformation halfway
between a distorted boat and a distorted sofa. The 3-furoylaminomethyl
moiety is in an extended conformation. This conformation is stabilize
d by two hydrogen bonds with the Cl- anion, one from the protonated ba
sic N atom of the heptadiene ring and another from the amidic N atom.