ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%28c2cc1N%28c3c%28Sc1cc2%29cccc3%29C%5BC%40H%5D%28C%29CN%28C%29C%29C/file?format=sdf&get3d=True  -- O%28c2cc1N%28c3c%28Sc1cc2%29cccc3%29C%5BC%40H%5D%28C%29CN%28C%29C%29C could not be loaded.