ERROR opening https://cactus.nci.nih.gov/chemical/structure/1S/C7H6O2/c8-7%289%296-4-2-1-3-5-6/h1-5H%2C%28H%2C8%2C9%29/file?format=sdf&get3d=True  -- 1S/C7H6O2/c8-7%289%296-4-2-1-3-5-6/h1-5H%2C%28H%2C8%2C9%29 could not be loaded.