ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%3DC2%5CC%3DC1%5CCC/C%28%3DC%28/C%29C%29C%5BC%40%40%5D1%28C%29%5BC%40H%5D%28C%29C2/file?format=sdf&get3d=True -- O%3DC2%5CC%3DC1%5CCC/C%28%3DC%28/C%29C%29C%5BC%40%40%5D1%28C%29%5BC%40H%5D%28C%29C2 could not be loaded.