ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%3DC%28O%29CCCCCCC/C%3DC/C%5BC%40H%5D%28O%29CCCCCC/file?format=sdf&get3d=True  -- O%3DC%28O%29CCCCCCC/C%3DC/C%5BC%40H%5D%28O%29CCCCCC could not be loaded.