ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%28C%29C1%28CCC%28CC1%29%28CCC2%3DCC%3DCC%3DC2%29O%29C3%3DCC%3DC%28C%3DC3%29Br/file?format=sdf&get3d=True  -- CN%28C%29C1%28CCC%28CC1%29%28CCC2%3DCC%3DCC%3DC2%29O%29C3%3DCC%3DC%28C%3DC3%29Br could not be loaded.