ERROR opening https://cactus.nci.nih.gov/chemical/structure/NC1CCN%28C1%29c1nc2n%28cc%28C%28O%29%3DO%29c%28%3DO%29c2cc1F%29-c1ccc%28F%29cc1F/file?format=sdf&get3d=True  -- NC1CCN%28C1%29c1nc2n%28cc%28C%28O%29%3DO%29c%28%3DO%29c2cc1F%29-c1ccc%28F%29cc1F could not be loaded.