ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCN2CCN%28C%29CC%28C2%29NC%28%3DO%29c1cc%28Br%29c%28NC%29cc1OC/file?format=sdf&get3d=True  -- CCN2CCN%28C%29CC%28C2%29NC%28%3DO%29c1cc%28Br%29c%28NC%29cc1OC could not be loaded.