ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1C%5BC%40%40H%5D2%5BC%40H%5D%28C%5BC%40H%5D1N2%29C3%3DCN%3DC%28C%3DC3%29Cl/file?format=sdf&get3d=True  -- C1C%5BC%40%40H%5D2%5BC%40H%5D%28C%5BC%40H%5D1N2%29C3%3DCN%3DC%28C%3DC3%29Cl could not be loaded.