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