ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1CCC%28C%28C1%29O%29C%28%26%2361%3BC%29C/file?format=sdf&get3d=True  -- CC1CCC%28C%28C1%29O%29C%28%26%2361%3BC%29C could not be loaded.