ERROR opening https://cactus.nci.nih.gov/chemical/structure/Fc1ccc%28cc1%29CNc2nc%28N%29c%28NC%28%3DO%29OCC%29cc2/file?format=sdf&get3d=True  -- Fc1ccc%28cc1%29CNc2nc%28N%29c%28NC%28%3DO%29OCC%29cc2 could not be loaded.