ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCCCCCCCN%3DC1C%3DCN%28C%3DC1%29CCCCCCCCCCN2C%3DCC%28%3DNCCCCCCCC%29C%3DC2.Cl.Cl/file?format=sdf&get3d=True  -- CCCCCCCCN%3DC1C%3DCN%28C%3DC1%29CCCCCCCCCCN2C%3DCC%28%3DNCCCCCCCC%29C%3DC2.Cl.Cl could not be loaded.