ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCN1CCN%28C%29CC%28C1%29NC%28%3DO%29c2cc%28Br%29c%28NC%29cc2OC/file?format=sdf&get3d=True  -- CCN1CCN%28C%29CC%28C1%29NC%28%3DO%29c2cc%28Br%29c%28NC%29cc2OC could not be loaded.