ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1%28CN%28%5CC%28C%29%3DN%5CC%23N%29C%29cnc%28cc1%29Cl/file?format=sdf&get3d=True  -- c1%28CN%28%5CC%28C%29%3DN%5CC%23N%29C%29cnc%28cc1%29Cl could not be loaded.