ERROR opening https://cactus.nci.nih.gov/chemical/structure/F%5CC%28F%29%3DC/%5BC%40H%5D1CC%28%3DO%29N%28%5BC%40H%5D%28C%28%3DO%29N%29CC%29C1/file?format=sdf&get3d=True  -- F%5CC%28F%29%3DC/%5BC%40H%5D1CC%28%3DO%29N%28%5BC%40H%5D%28C%28%3DO%29N%29CC%29C1 could not be loaded.