ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%3DC1C/3%3DC/C%28%3DCC%5C3%3DC%28/C2%28%5BC%40%5D1%28O%29C%29CC2%29C%29C/file?format=sdf&get3d=True  -- O%3DC1C/3%3DC/C%28%3DCC%5C3%3DC%28/C2%28%5BC%40%5D1%28O%29C%29CC2%29C%29C could not be loaded.