ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%5BC%40%40H%5D%28%5BC%40H%5D%28C%29NC%29c1ccccc1/file?format=sdf&get3d=True  -- O%5BC%40%40H%5D%28%5BC%40H%5D%28C%29NC%29c1ccccc1 could not be loaded.