ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28%3DO%29NC1C%28C%28C%28OC1O%29CO%29O%29O/file?format=sdf&get3d=True  -- CC%28%3DO%29NC1C%28C%28C%28OC1O%29CO%29O%29O could not be loaded.