ERROR opening https://cactus.nci.nih.gov/chemical/structure/Cc1ncc2CN%3DC%28c3ccccc3F%29c4cc%28Cl%29ccc4n12/file?format=sdf&get3d=True  -- Cc1ncc2CN%3DC%28c3ccccc3F%29c4cc%28Cl%29ccc4n12 could not be loaded.