ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%29%28C%29O%5BAl%5D%28OC%28C%29%28C%29C%29OC%28C%29%28C%29C/file?format=sdf&get3d=True  -- CC%28C%29%28C%29O%5BAl%5D%28OC%28C%29%28C%29C%29OC%28C%29%28C%29C could not be loaded.