ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%5BC%40H%5D1CC%5BC%40%40H%5D%28%5BC%40H%5D1C%3DO%29%5BC%40H%5D%28C%29C%3DO/file?format=sdf&get3d=True -- C%5BC%40H%5D1CC%5BC%40%40H%5D%28%5BC%40H%5D1C%3DO%29%5BC%40H%5D%28C%29C%3DO could not be loaded.