ERROR opening https://cactus.nci.nih.gov/chemical/structure/OCC1OC%28O/C%28%3DC%28/CC%28%3DO%29O%29C%3DCC%28%3DO%29O%29/C/file?format=sdf&get3d=True  -- OCC1OC%28O/C%28%3DC%28/CC%28%3DO%29O%29C%3DCC%28%3DO%29O%29/C could not be loaded.