ERROR opening https://cactus.nci.nih.gov/chemical/structure/CNC%28%3DC%5BN%20%5D%28%3DO%29%5BO-%5D%29NCCSCC1%3DCC%3DC%28O1%29CN%28C%29C/file?format=sdf&get3d=True  -- CNC%28%3DC%5BN%20%5D%28%3DO%29%5BO-%5D%29NCCSCC1%3DCC%3DC%28O1%29CN%28C%29C could not be loaded.