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