ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%28C%29C%28%3DO%29Cc1c%28nc2ccc%28C%29cn12%29c3ccc%28C%29cc3/file?format=sdf&get3d=True  -- CN%28C%29C%28%3DO%29Cc1c%28nc2ccc%28C%29cn12%29c3ccc%28C%29cc3 could not be loaded.