ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28CCC3%29%28C%29c2c3c1ccc%28C%28C%29C%29cc1cc2/file?format=sdf&get3d=True  -- CC%28CCC3%29%28C%29c2c3c1ccc%28C%28C%29C%29cc1cc2 could not be loaded.