ERROR opening https://cactus.nci.nih.gov/chemical/structure/FC%28F%29%28C1%3DC%28OC%29C%3DC%28CCN%29C%28OC%29%3DC1%29F/file?format=sdf&get3d=True  -- FC%28F%29%28C1%3DC%28OC%29C%3DC%28CCN%29C%28OC%29%3DC1%29F could not be loaded.