ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%28C%29C%28%3DO%29OC1%3DCC%3DCC%28%3DC1%29N%20%28C%29%28C%29C/file?format=sdf&get3d=True  -- CN%28C%29C%28%3DO%29OC1%3DCC%3DCC%28%3DC1%29N%20%28C%29%28C%29C could not be loaded.