ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28OP%28%3DO%29%28C%29F%29C%28C%29%28C%29C/file?format=sdf&get3d=True  -- CC%28OP%28%3DO%29%28C%29F%29C%28C%29%28C%29C could not be loaded.