ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%3DS%28C2%3DCC%3DCC1%3DC%28S%28%3DO%29%28O%29%3DO%29C%3DCC%3DC12%29%28O%29%3DO/file?format=sdf&get3d=True  -- O%3DS%28C2%3DCC%3DCC1%3DC%28S%28%3DO%29%28O%29%3DO%29C%3DCC%3DC12%29%28O%29%3DO could not be loaded.