ERROR opening http://cactvs.nci.nih.gov/chemical/structure/C%5BC%40%40H%5D%28CCC%3DC%28C%29C%29%5BC%40H%5D1CC%3DC%28C%29C%3DC1/file?format=sdf&get3d=True -- C%5BC%40%40H%5D%28CCC%3DC%28C%29C%29%5BC%40H%5D1CC%3DC%28C%29C%3DC1 could not be loaded.