ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%3DC%28c1c%28OC%29cc%28O%29c%28c1O%29C/C%3DC%28%5CC%29C%29%5CC%3DC%5Cc2ccc%28O%29cc2/file?format=sdf&get3d=True  -- O%3DC%28c1c%28OC%29cc%28O%29c%28c1O%29C/C%3DC%28%5CC%29C%29%5CC%3DC%5Cc2ccc%28O%29cc2 could not be loaded.