ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%3DC%28O%29C%28%3DC2/OC%28/O%29%3DC%28/c1ccccc1%29C2%3DO%29/c3ccccc3/file?format=sdf&get3d=True  -- O%3DC%28O%29C%28%3DC2/OC%28/O%29%3DC%28/c1ccccc1%29C2%3DO%29/c3ccccc3 could not be loaded.