ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCCN1CCC%5BC%40H%5D%28C1%29C2%3DCC%28%3DCC%3DC2%29S%28%3DO%29%28%3DO%29C/file?format=sdf&get3d=True  -- CCCN1CCC%5BC%40H%5D%28C1%29C2%3DCC%28%3DCC%3DC2%29S%28%3DO%29%28%3DO%29C could not be loaded.