ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%28C%3DC%28c2cc%28ccc2O1%29C%23N%29n3ccccc3%3DO%29C/file?format=sdf&get3d=True  -- CC1%28C%3DC%28c2cc%28ccc2O1%29C%23N%29n3ccccc3%3DO%29C could not be loaded.