ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%29%28C%29c1cc%28C%3DO%29c%28O%29c%28c1%29C%28C%29%28C%29C/file?format=sdf&get3d=True -- CC%28C%29%28C%29c1cc%28C%3DO%29c%28O%29c%28c1%29C%28C%29%28C%29C could not be loaded.