ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%5BC%40%5D%28N%29%28Cc1ccc%28O%29c%28O%29c1%29C%28%3DO%29O/file?format=sdf&get3d=True  -- C%5BC%40%5D%28N%29%28Cc1ccc%28O%29c%28O%29c1%29C%28%3DO%29O could not be loaded.