ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%26%2361%3BC%28C%29C%28C%28C%29C%26%2361%3BC%28C%29C%26%2361%3BCCC%28%26%2361%3BCCC1%26%2361%3BC%28C%28%26%2361%3BO%29C%28%26%2361%3BC%28N1%29OC%29OC%29C%29C%29O/file?format=sdf&get3d=True -- CC%26%2361%3BC%28C%29C%28C%28C%29C%26%2361%3BC%28C%29C%26%2361%3BCCC%28%26%2361%3BCCC1%26%2361%3BC%28C%28%26%2361%3BO%29C%28%26%2361%3BC%28N1%29OC%29OC%29C%29C%29O could not be loaded.