ERROR opening https://cactus.nci.nih.gov/chemical/structure/C%28CBr%29%5BS%5D%28%3DO%29%28%3DO%29CCBr/file?format=sdf&get3d=True  -- C%28CBr%29%5BS%5D%28%3DO%29%28%3DO%29CCBr could not be loaded.