ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%5BC%40%5D%28C1%3DC%28Cl%29C%3DCC%3DC1%29%28CCCC2%29C2%3DO/file?format=sdf&get3d=True  -- CN%5BC%40%5D%28C1%3DC%28Cl%29C%3DCC%3DC1%29%28CCCC2%29C2%3DO could not be loaded.