ERROR opening https://cactus.nci.nih.gov/chemical/structure/Fc3ccccc3c1nc%28no1%29c2cc%28ccc2%29C%28%3DO%29O/file?format=sdf&get3d=True  -- Fc3ccccc3c1nc%28no1%29c2cc%28ccc2%29C%28%3DO%29O could not be loaded.