ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%3DC2C%28O%5BC%40%40%5D%28CCC%5BC%40H%5D%28C%29CCC%5BC%40H%5D%28C%29CCCC%28C%29C%29%28C%29CC2%29%3DC%28C%29C%28C%29%3DC1OC%28C%29%3DO/file?format=sdf&get3d=True  -- CC1%3DC2C%28O%5BC%40%40%5D%28CCC%5BC%40H%5D%28C%29CCC%5BC%40H%5D%28C%29CCCC%28C%29C%29%28C%29CC2%29%3DC%28C%29C%28C%29%3DC1OC%28C%29%3DO could not be loaded.