ERROR opening https://cactus.nci.nih.gov/chemical/structure/n2c1N%28c3c%28Sc1ccc2%29cccc3%29CC%28N%28C%29C%29C/file?format=sdf&get3d=True  -- n2c1N%28c3c%28Sc1ccc2%29cccc3%29CC%28N%28C%29C%29C could not be loaded.