ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28Cc2ccc1OCOc1c2%29NC%28%3DO%29C%28N%29CCCCN/file?format=sdf&get3d=True  -- CC%28Cc2ccc1OCOc1c2%29NC%28%3DO%29C%28N%29CCCCN could not be loaded.