ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%3DS1%28%3DO%29CCS%28%3DO%29%28%3DO%29C%28C%29%3DC1C/file?format=sdf&get3d=True  -- O%3DS1%28%3DO%29CCS%28%3DO%29%28%3DO%29C%28C%29%3DC1C could not be loaded.