111317-36-3 2-Acetamidodipyrido(1,2-a:3',2'-d)imidazole Acetamide, N-(dipyrido(1,2-a:3',2'-d)imidazol-2-yl)- N-(Dipyrido(1,2-a:3',2'-d)imidazol-2-yl)acetamide