ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN1C%28CCCC1CC%28C2%3DCC%3DCC%3DC2%29O%29CC%28C3%3DCC%3DCC%3DC3%29O/file?format=sdf&get3d=True -- CN1C%28CCCC1CC%28C2%3DCC%3DCC%3DC2%29O%29CC%28C3%3DCC%3DCC%3DC3%29O could not be loaded.