ERROR opening https://cactus.nci.nih.gov/chemical/structure/C/C%28%26%2361%3BNC%23N%29/N%28C%29Cc1ccc%28nc1%29Cl/file?format=sdf&get3d=True  -- C/C%28%26%2361%3BNC%23N%29/N%28C%29Cc1ccc%28nc1%29Cl could not be loaded.