ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC12CC%28C%28O%29CC1CCC3C4CCC%28C%28%3DO%29CCl%29C4%28C%29CCC23%29N5CCOCC5/file?format=sdf&get3d=True  -- CC12CC%28C%28O%29CC1CCC3C4CCC%28C%28%3DO%29CCl%29C4%28C%29CCC23%29N5CCOCC5 could not be loaded.