ERROR opening https://cactus.nci.nih.gov/chemical/structure/FC%28F%29%28F%29C%28OCF%29C%28F%29%28F%29F/file?format=sdf&get3d=True  -- FC%28F%29%28F%29C%28OCF%29C%28F%29%28F%29F could not be loaded.