ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1%28OC%28C%28OCC%29%3DO%29%28C%29C%29ccc%28Cl%29cc1/file?format=sdf&get3d=True  -- c1%28OC%28C%28OCC%29%3DO%29%28C%29C%29ccc%28Cl%29cc1 could not be loaded.