(4aS,8aS)-9,10,11,12-Tetrahydro-3-Methoxy-11-Methyl-4aH-benzofuro[3a,3,2-ef][2]benzazepine;Anhydro GalanthaMine;R 116937;TetrahydrogalantaMine;Anhydro GalantaMine (GalantaMine IMpurity D);GalantaMine IMpurity D HCl (Anhydro GalantaMine HCl);Galantamine EP impurity D;Galantamine EP Impurity D HCl