ERROR opening https://cactus.nci.nih.gov/chemical/structure/FC%28F%29%28F%29Oc2ccc%28cc2%29NC%28%3DO%29NC%28%3DO%29c1ccccc1Cl/file?format=sdf&get3d=True  -- FC%28F%29%28F%29Oc2ccc%28cc2%29NC%28%3DO%29NC%28%3DO%29c1ccccc1Cl could not be loaded.