ERROR opening https://cactus.nci.nih.gov/chemical/structure/C12%26%2361%3BC%28NC%28%26%2361%3BO%29N1%29NC%28%26%2361%3BO%29NC2%26%2361%3BO/file?format=sdf&get3d=True  -- C12%26%2361%3BC%28NC%28%26%2361%3BO%29N1%29NC%28%26%2361%3BO%29NC2%26%2361%3BO could not be loaded.