ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1CC%28%26%2361%3BO%29C%26%2361%3BC2C1%28CC%28CC2%29C%28%26%2361%3BC%29C%29C/file?format=sdf&get3d=True -- CC1CC%28%26%2361%3BO%29C%26%2361%3BC2C1%28CC%28CC2%29C%28%26%2361%3BC%29C%29C could not be loaded.