ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%3DC%28OC1CC%28CC%28C1%29%28C%29C%29C%29c2ccccc2O/file?format=sdf&get3d=True  -- O%3DC%28OC1CC%28CC%28C1%29%28C%29C%29C%29c2ccccc2O could not be loaded.