ERROR opening https://cactus.nci.nih.gov/chemical/structure/%5BK%2B%5D.%5BO-%5DS%28%3DO%29%28%3DO%29OO/file?format=sdf&get3d=True -- %5BK%2B%5D.%5BO-%5DS%28%3DO%29%28%3DO%29OO could not be loaded.