ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCCCCCCCCCCCCCCCCCOP%28%3DO%29%28O-%29OC1CCN%20%28CC1%29%28C%29C/file?format=sdf&get3d=True  -- CCCCCCCCCCCCCCCCCCOP%28%3DO%29%28O-%29OC1CCN%20%28CC1%29%28C%29C could not be loaded.