ERROR opening https://cactus.nci.nih.gov/chemical/structure/BrC1%3DC2C%28OCC2%29%3DC%28CCN%29C3%3DC1OCC3/file?format=sdf&get3d=True  -- BrC1%3DC2C%28OCC2%29%3DC%28CCN%29C3%3DC1OCC3 could not be loaded.