ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%20%28C%29%28C%29CCOP%28O-%29%28%3DO%29OCC%28COC%28%2A%29%3DO%29OC%28%2A%29%3DO/file?format=sdf&get3d=True  -- CN%20%28C%29%28C%29CCOP%28O-%29%28%3DO%29OCC%28COC%28%2A%29%3DO%29OC%28%2A%29%3DO could not be loaded.