ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%3DC1CN%28C%29C%28NC%28NC2%3DCC%3DCC%28Cl%29%3DC2%29%3DO%29%3DN1/file?format=sdf&get3d=True  -- O%3DC1CN%28C%29C%28NC%28NC2%3DCC%3DCC%28Cl%29%3DC2%29%3DO%29%3DN1 could not be loaded.