ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCOC%28%3DO%29NC%28C%29%28C%29CC1%3DCC%3DC%28C%3DC1%29Cl/file?format=sdf&get3d=True  -- CCOC%28%3DO%29NC%28C%29%28C%29CC1%3DCC%3DC%28C%3DC1%29Cl could not be loaded.