2D representation of the molecular structure of Nylon 66, polymer chain of hexamethylene diamine and adipic acid, amide bonds (-CONH-) connecting units, distinct colors or labels for carbon (C), hydrogen (H), nitrogen (N), and oxygen (O) atoms, alternating sequence of six carbon atoms, amide bond, six more carbon atoms, continuing pattern, scientifically accurate, high-resolution, white background, dimensions 1024x1024,  --ar 1:1 --s 750