ERROR opening https://cactus.nci.nih.gov/chemical/structure/COc1cc%28OC%29c%28Cl%29cc1NC%28%3DO%29Nc2noc%28C%29c2/file?format=sdf&get3d=True  -- COc1cc%28OC%29c%28Cl%29cc1NC%28%3DO%29Nc2noc%28C%29c2 could not be loaded.