ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C1%3DCC2%3DC%28C%3DC1%29SC3%3DCC%3DCC%3DC3C%28%3DO%29C2%29C%28%3DO%29O/file?format=sdf&get3d=True  -- CC%28C1%3DCC2%3DC%28C%3DC1%29SC3%3DCC%3DCC%3DC3C%28%3DO%29C2%29C%28%3DO%29O could not be loaded.