ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCCCC%5CC%3DC/C%5CC%3DC/C%5CC%3DC/C%5CC%3DC/CCC%5CC%28%3DN%5CCCCl%29%5CO/file?format=sdf&get3d=True  -- CCCCC%5CC%3DC/C%5CC%3DC/C%5CC%3DC/C%5CC%3DC/CCC%5CC%28%3DN%5CCCCl%29%5CO could not be loaded.