ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28%3DO%29c1cc2N%28CC%28C%29N%28C%29C%29c3ccccc3Sc2cc1/file?format=sdf&get3d=True  -- CC%28%3DO%29c1cc2N%28CC%28C%29N%28C%29C%29c3ccccc3Sc2cc1 could not be loaded.