ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28%3DCC%3DCC%28C%29%3DCCO%29+C%3DCC1%3DC%28C%29CCCC1%28C%29C/file?format=sdf&get3d=True -- CC%28%3DCC%3DCC%28C%29%3DCCO%29+C%3DCC1%3DC%28C%29CCCC1%28C%29C could not be loaded.