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