ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28%3DO%29NC1%3DNN%3DC%28S1%29S%28%3DO%29%28%3DO%29N/file?format=sdf&get3d=True  -- CC%28%3DO%29NC1%3DNN%3DC%28S1%29S%28%3DO%29%28%3DO%29N could not be loaded.