ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%3DC%28C%28C%5BC%40%40H%5D%28C1%29O%29%28C%29C%29%5CC%3DC%5CC%28%3DC%5CC%3DC%5CC%28%3DC%5CC%3DC%5CC%3DC%28/C%29%5CC%3DC%5CC%3DC%28/C%29%5CC%3DC%5CC%3DC%28/C%29%5CCCC%3DC%28C%29C%29%5CC%29%5CC/file?format=sdf&get3d=True  -- CC1%3DC%28C%28C%5BC%40%40H%5D%28C1%29O%29%28C%29C%29%5CC%3DC%5CC%28%3DC%5CC%3DC%5CC%28%3DC%5CC%3DC%5CC%3DC%28/C%29%5CC%3DC%5CC%3DC%28/C%29%5CC%3DC%5CC%3DC%28/C%29%5CCCC%3DC%28C%29C%29%5CC%29%5CC could not be loaded.