ERROR opening https://cactus.nci.nih.gov/chemical/structure/OC1C%28O%29C2C%28C%3DC%28O%29C%3DC2O%29OC1c%28cc3OC%29ccc3O/file?format=sdf&get3d=True  -- OC1C%28O%29C2C%28C%3DC%28O%29C%3DC2O%29OC1c%28cc3OC%29ccc3O could not be loaded.