ERROR opening https://cactus.nci.nih.gov/chemical/structure/OCCCC%23CC%23CC%26%2361%3BCC%26%2361%3BCC%26%2361%3BCC%28O%29CCC/file?format=sdf&get3d=True  -- OCCCC%23CC%23CC%26%2361%3BCC%26%2361%3BCC%26%2361%3BCC%28O%29CCC could not be loaded.