ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCOC%28%3DO%29C1%3DNC%3DC2C%28%3DC1C%29C3%3DC%28N2%29C%3DCC%3DC3OC%28C%29C/file?format=sdf&get3d=True  -- CCOC%28%3DO%29C1%3DNC%3DC2C%28%3DC1C%29C3%3DC%28N2%29C%3DCC%3DC3OC%28C%29C could not be loaded.