ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC14CCC2%3DC3CCC%28%3DO%29C%3DC3CCC2C4CCC1%28O%29CC/file?format=sdf&get3d=True -- CC14CCC2%3DC3CCC%28%3DO%29C%3DC3CCC2C4CCC1%28O%29CC could not be loaded.