ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%29C%28C%29C%3DCC%28C%29C1CCC2C1%28CC%28C3%3DC2CC%3DC4C3%28CCC%28C4%29O%29C%29O%29C/file?format=sdf&get3d=True  -- CC%28C%29C%28C%29C%3DCC%28C%29C1CCC2C1%28CC%28C3%3DC2CC%3DC4C3%28CCC%28C4%29O%29C%29O%29C could not be loaded.