ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1%3DCC%28%3DCC%3DC1C%28C%29CC%3DCC2%3DCC%3DC%28C%3DC2%29OC%29OC/file?format=sdf&get3d=True  -- C1%3DCC%28%3DCC%3DC1C%28C%29CC%3DCC2%3DCC%3DC%28C%3DC2%29OC%29OC could not be loaded.