ERROR opening http://cactvs.nci.nih.gov/chemical/structure/O%28%5BC%40%40H%5D%28C%2A%29%2A%29C%28C%29%3DO/file?format=sdf&get3d=True -- O%28%5BC%40%40H%5D%28C%2A%29%2A%29C%28C%29%3DO could not be loaded.