ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCC%5BC%40%40H%5D%28CC/C%3DC/C%3DC/C%23CC%23C/C%3DC%5CCO%29O/file?format=sdf&get3d=True  -- CCC%5BC%40%40H%5D%28CC/C%3DC/C%3DC/C%23CC%23C/C%3DC%5CCO%29O could not be loaded.