ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%3DCCC23C1C4C%28CCC2%28O3%29C%29C%28%3DC%29C%28%3DO%29O4/file?format=sdf&get3d=True  -- CC1%3DCCC23C1C4C%28CCC2%28O3%29C%29C%28%3DC%29C%28%3DO%29O4 could not be loaded.