ERROR opening https://cactus.nci.nih.gov/chemical/structure/Li%20.C1%3DCC%3DC%28C%3DC1%29C%28%3DO%29O-/file?format=sdf&get3d=True -- Li%20.C1%3DCC%3DC%28C%3DC1%29C%28%3DO%29O- could not be loaded.