ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1CN%5BC%40%40H%5D2%5BC%40H%5D%28C3%3DCC%3DCC%3DC3C4%3DC2C1%3DCC5%3DC4OCO5%29O/file?format=sdf&get3d=True  -- C1CN%5BC%40%40H%5D2%5BC%40H%5D%28C3%3DCC%3DCC%3DC3C4%3DC2C1%3DCC5%3DC4OCO5%29O could not be loaded.