ERROR opening https://cactus.nci.nih.gov/chemical/structure/n1%28%5BC%40%40H%5D2O%5BC%40H%5D%28CO%29CC2%29c%28nc%28N%29cc1%29%3DO/file?format=sdf&get3d=True  -- n1%28%5BC%40%40H%5D2O%5BC%40H%5D%28CO%29CC2%29c%28nc%28N%29cc1%29%3DO could not be loaded.