ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCC1%3DCC%28%3DC%28C%28%3DC1O%29C%28%3DO%29NCC2CCCN2CC%29OC%29Cl/file?format=sdf&get3d=True  -- CCC1%3DCC%28%3DC%28C%28%3DC1O%29C%28%3DO%29NCC2CCCN2CC%29OC%29Cl could not be loaded.