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