ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1%28cc%28c%28O%29cc1%29O%29%5BC%40H%5D%28CN%29O/file?format=sdf&get3d=True  -- c1%28cc%28c%28O%29cc1%29O%29%5BC%40H%5D%28CN%29O could not be loaded.