poly(2-(dimethylamino)ethyl methacrylate-co-(cis-butenedioic anhydride-poly((N-isopropylacrylamide)-co-(butyl methacrylate))))
poly(2-(dimethylamino)ethyl methacrylate-co-(cis-butenedioic anhydride-poly((n-isopropylacrylamide)-co-(butyl methacrylate))))