ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCCCCCCCN1C%28%3DO%29C%28%3DC%28S1%29Cl%29Cl/file?format=sdf&get3d=True  -- CCCCCCCCN1C%28%3DO%29C%28%3DC%28S1%29Cl%29Cl could not be loaded.