ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1cc%28c%28cc1C%28%3DO%29N%29%5BN%2B%5D%28%3DO%29%5BO-%5D%29I/file?format=sdf&get3d=True  -- c1cc%28c%28cc1C%28%3DO%29N%29%5BN%2B%5D%28%3DO%29%5BO-%5D%29I could not be loaded.