ERROR opening https://cactus.nci.nih.gov/chemical/structure/CSCC%5BC%40H%5D%28%5BNH3%2B%5D%29C%28%3DO%29%5BO-%5D/file?format=sdf&get3d=True  -- CSCC%5BC%40H%5D%28%5BNH3%2B%5D%29C%28%3DO%29%5BO-%5D could not be loaded.