ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28CCC%28%26%2361%3BO%29O%29C1CCC2C1%28CCC3C2C%28CC4C3%28CCC%28C4%29O%29C%29O%29C/file?format=sdf&get3d=True -- CC%28CCC%28%26%2361%3BO%29O%29C1CCC2C1%28CCC3C2C%28CC4C3%28CCC%28C4%29O%29C%29O%29C could not be loaded.