ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1%28c%28cc%28cc1%29O%29O%29C%28%5CC%3DC%5Cc1ccc%28cc1%29O%29%3DO/file?format=sdf&get3d=True  -- c1%28c%28cc%28cc1%29O%29O%29C%28%5CC%3DC%5Cc1ccc%28cc1%29O%29%3DO could not be loaded.