ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1CC%28C%28CCC%28C%28CCC%28C1Br%29Br%29Br%29Br%29Br%29Br/file?format=sdf&get3d=True  -- C1CC%28C%28CCC%28C%28CCC%28C1Br%29Br%29Br%29Br%29Br%29Br could not be loaded.