ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%3DC%28C%3DCC%28%3DC1%29C2%28C3%3DCC%3DCC%3DC3C%28%3DO%29O2%29C4%3DCC%28%3DC%28C%3DC4%29O%29C%29O/file?format=sdf&get3d=True  -- CC1%3DC%28C%3DCC%28%3DC1%29C2%28C3%3DCC%3DCC%3DC3C%28%3DO%29O2%29C4%3DCC%28%3DC%28C%3DC4%29O%29C%29O could not be loaded.