ERROR opening https://cactus.nci.nih.gov/chemical/structure/%5BO-%5D%5BN%2B%5D%28%3DO%29O%5BC%40H%5D1CO%5BC%40%40H%5D2%5BC%40H%5D%28O%5BN%2B%5D%28%5BO-%5D%29%3DO%29CO%5BC%40H%5D12/file?format=sdf&get3d=True  -- %5BO-%5D%5BN%2B%5D%28%3DO%29O%5BC%40H%5D1CO%5BC%40%40H%5D2%5BC%40H%5D%28O%5BN%2B%5D%28%5BO-%5D%29%3DO%29CO%5BC%40H%5D12 could not be loaded.