ERROR opening https://cactus.nci.nih.gov/chemical/structure/Fc1ccc%28cc1%29C%28c2c%28F%29cccc2%29%28c3ccccc3%29n4ccnc4/file?format=sdf&get3d=True  -- Fc1ccc%28cc1%29C%28c2c%28F%29cccc2%29%28c3ccccc3%29n4ccnc4 could not be loaded.