ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCC%28C%29C%28%3DO%29C12C%28%3DC%28C%28%3DO%29C%28C1%3DO%29%28CC%28C2%28C%29CCC%3DC%28C%29C%29CC%3DC%28C%29C%29CC%3DC%28C%29C%29CC%3DC%28C%29C%29O/file?format=sdf&get3d=True  -- CCC%28C%29C%28%3DO%29C12C%28%3DC%28C%28%3DO%29C%28C1%3DO%29%28CC%28C2%28C%29CCC%3DC%28C%29C%29CC%3DC%28C%29C%29CC%3DC%28C%29C%29CC%3DC%28C%29C%29O could not be loaded.