ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%28C%29CCOc1ccc%28cc1%29/C%28c2ccccc2%29%3DC%28/CC%29c3ccccc3/file?format=sdf&get3d=True  -- CN%28C%29CCOc1ccc%28cc1%29/C%28c2ccccc2%29%3DC%28/CC%29c3ccccc3 could not be loaded.