ERROR opening https://cactus.nci.nih.gov/chemical/structure/COC%28%3DO%29CC%5BC%40%40H%5D1N%3DC%28c2ccccn2%29c2cc%28Br%29ccc2-n2c%28C%29cnc21/file?format=sdf&get3d=True  -- COC%28%3DO%29CC%5BC%40%40H%5D1N%3DC%28c2ccccn2%29c2cc%28Br%29ccc2-n2c%28C%29cnc21 could not be loaded.