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