ERROR opening https://cactus.nci.nih.gov/chemical/structure/FC%3D1C%28F%29%3DC%28F%29C%28%3DC%28F%29C1F%29C/file?format=sdf&get3d=True  -- FC%3D1C%28F%29%3DC%28F%29C%28%3DC%28F%29C1F%29C could not be loaded.