ERROR opening https://cactus.nci.nih.gov/chemical/structure/OC%5BC%40%40H%5D1%5BC%40%40H%5D%28O%29%5BC%40H%5D%28O%29%5BC%40%40H%5D%28O%29%5BC%40%40H%5D2NC%28%3DO%29C%28%3DO%29N12/file?format=sdf&get3d=True  -- OC%5BC%40%40H%5D1%5BC%40%40H%5D%28O%29%5BC%40H%5D%28O%29%5BC%40%40H%5D%28O%29%5BC%40%40H%5D2NC%28%3DO%29C%28%3DO%29N12 could not be loaded.