ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC12CCC%28%26%2361%3BO%29CC1CCC3C2C%28CC4%28C3CCC4C%28%26%2361%3BO%29CO%29C%29O/file?format=sdf&get3d=True -- CC12CCC%28%26%2361%3BO%29CC1CCC3C2C%28CC4%28C3CCC4C%28%26%2361%3BO%29CO%29C%29O could not be loaded.