ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%28%5Cc1ccc%28C%29cc1%29%28c1ccccn1%29%3DC/CN1CCCC1/file?format=sdf&get3d=True  -- C%28%5Cc1ccc%28C%29cc1%29%28c1ccccn1%29%3DC/CN1CCCC1 could not be loaded.