ERROR opening https://cactus.nci.nih.gov/chemical/structure/F%5CC%28%5CCl%29%3DN/OP%28%3DO%29%28F%29OC%28C%29C%28C%29Cl/file?format=sdf&get3d=True  -- F%5CC%28%5CCl%29%3DN/OP%28%3DO%29%28F%29OC%28C%29C%28C%29Cl could not be loaded.