ERROR opening https://cactus.nci.nih.gov/chemical/structure/OC%28%3DO%29%5CC%3DC%28%5CC%29/C%3DC/%5BC%40%40%5D1%28O%29C%28C%29%3DCC%28%3DO%29CC1%28C%29C/file?format=sdf&get3d=True -- OC%28%3DO%29%5CC%3DC%28%5CC%29/C%3DC/%5BC%40%40%5D1%28O%29C%28C%29%3DCC%28%3DO%29CC1%28C%29C could not be loaded.