ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%28%26%2361%3BO%29O%29OC1%26%2361%3BCC%28%26%2361%3BC%28C%26%2361%3BC1Cl%29Cl%29Cl/file?format=sdf&get3d=True  -- CC%28C%28%26%2361%3BO%29O%29OC1%26%2361%3BCC%28%26%2361%3BC%28C%26%2361%3BC1Cl%29Cl%29Cl could not be loaded.