ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN1CC%28%3DC%29C%3DC2%5BC%40H%5D1CC3%3DCNC4%3DCC%3DCC2%3DC34/file?format=sdf&get3d=True  -- CN1CC%28%3DC%29C%3DC2%5BC%40H%5D1CC3%3DCNC4%3DCC%3DCC2%3DC34 could not be loaded.