ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1ccc%28c%28c1%29C2%3DNCC%28%3DO%29Nc3c2cc%28cc3%29Br%29Cl/file?format=sdf&get3d=True  -- c1ccc%28c%28c1%29C2%3DNCC%28%3DO%29Nc3c2cc%28cc3%29Br%29Cl could not be loaded.