ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1CN2CC%3DC%28%5BC%40%40H%5D2%5BC%40%40H%5D1O%29CO/file?format=sdf&get3d=True  -- C1CN2CC%3DC%28%5BC%40%40H%5D2%5BC%40%40H%5D1O%29CO could not be loaded.