ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1C%5BC%40%40H%5D2%5BC%40H%5D%28C1%29C3%3DC%28C%3DCC%28%3DC3%29O%29O%5BC%40%40H%5D2C4%3DCC%3DC%28C%3DC4%29O/file?format=sdf&get3d=True -- C1C%5BC%40%40H%5D2%5BC%40H%5D%28C1%29C3%3DC%28C%3DCC%28%3DC3%29O%29O%5BC%40%40H%5D2C4%3DCC%3DC%28C%3DC4%29O could not be loaded.