ERROR opening https://cactus.nci.nih.gov/chemical/structure/c12c%28O%5BC%40%40H%5D%28c3ccc%28O%29cc3%29CC1%3DO%29cc%28O%29cc2O/file?format=sdf&get3d=True  -- c12c%28O%5BC%40%40H%5D%28c3ccc%28O%29cc3%29CC1%3DO%29cc%28O%29cc2O could not be loaded.