ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%5CC%3DC%28c1ccc%28OC%28C%29%3DO%29cc1%29/C%28%3DC/C%29c2ccc%28OC%28C%29%3DO%29cc2/file?format=sdf&get3d=True  -- C%5CC%3DC%28c1ccc%28OC%28C%29%3DO%29cc1%29/C%28%3DC/C%29c2ccc%28OC%28C%29%3DO%29cc2 could not be loaded.