ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCCCCC1%3DCC%28%3DC2C%28%3DC1%29OC%28C3%3DC2C%3DC%28C%3DC3%29CO%29%28C%29C%29O/file?format=sdf&get3d=True -- CCCCCC1%3DCC%28%3DC2C%28%3DC1%29OC%28C3%3DC2C%3DC%28C%3DC3%29CO%29%28C%29C%29O could not be loaded.