ERROR opening https://cactus.nci.nih.gov/chemical/structure/C3CN%28C%29CCN3c2nc1cc%28C%28F%29%28F%29F%29ccc1n4cccc24/file?format=sdf&get3d=True  -- C3CN%28C%29CCN3c2nc1cc%28C%28F%29%28F%29F%29ccc1n4cccc24 could not be loaded.