ERROR opening https://cactus.nci.nih.gov/chemical/structure/COC1%3DC%28C%3DC2C%28%3DC1O%29C%28%3DO%29C%28%3DC%28O2%29C3%3DCC%28%3DC%28C%3DC3%29O%29O%29O%29O/file?format=sdf&get3d=True -- COC1%3DC%28C%3DC2C%28%3DC1O%29C%28%3DO%29C%28%3DC%28O2%29C3%3DCC%28%3DC%28C%3DC3%29O%29O%29O%29O could not be loaded.