ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCN%28CC%29CCOC1%3DCC%3DC%28C%3DC1%29C%28CC2%3DCC%3DC%28C%3DC2%29OC%29%28C3%3DCC%3DCC%3DC3%29O/file?format=sdf&get3d=True  -- CCN%28CC%29CCOC1%3DCC%3DC%28C%3DC1%29C%28CC2%3DCC%3DC%28C%3DC2%29OC%29%28C3%3DCC%3DCC%3DC3%29O could not be loaded.