ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1cc%28F%29ccc1C%28O%29CCCN2CCN%28CC2%29c3ncc%28F%29cn3/file?format=sdf&get3d=True  -- c1cc%28F%29ccc1C%28O%29CCCN2CCN%28CC2%29c3ncc%28F%29cn3 could not be loaded.