ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%5BC%40%40%5D1%28CC%5BC%40%40H%5D2%5BC%40%40%5D1%28CC%5BC%40H%5D3%5BC%40H%5D2CCC4%3DC3C%3DCC%28%3DC4%29O%29C%29O/file?format=sdf&get3d=True  -- CC%5BC%40%40%5D1%28CC%5BC%40%40H%5D2%5BC%40%40%5D1%28CC%5BC%40H%5D3%5BC%40H%5D2CCC4%3DC3C%3DCC%28%3DC4%29O%29C%29O could not be loaded.