ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1cc%28ccc1C%28C%29%28CC%28C%29%28C%29C%29C%29OCCO/file?format=sdf&get3d=True  -- c1cc%28ccc1C%28C%29%28CC%28C%29%28C%29C%29C%29OCCO could not be loaded.