ERROR opening https://cactus.nci.nih.gov/chemical/structure/COC1%3DC2C%28%3DO%29C%3DC%28OC2%3DC%28C3%3DC1C%3DCO3%29OC%29CO/file?format=sdf&get3d=True  -- COC1%3DC2C%28%3DO%29C%3DC%28OC2%3DC%28C3%3DC1C%3DCO3%29OC%29CO could not be loaded.