ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1CNCC2%26%2361%3BC1C%28%26%2361%3BO%29NO2/file?format=sdf&get3d=True  -- C1CNCC2%26%2361%3BC1C%28%26%2361%3BO%29NO2 could not be loaded.