ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCN%28CC%29CCCC%28C%29Nc1c2ccc%28cc2nc3c1cc%28cc3%29OC%29Cl/file?format=sdf&get3d=True  -- CCN%28CC%29CCCC%28C%29Nc1c2ccc%28cc2nc3c1cc%28cc3%29OC%29Cl could not be loaded.