ERROR opening https://cactus.nci.nih.gov/chemical/structure/O%3DS%28CCC%29CCCN%28CC%29CC%28O%29COc1ccc%28C%23N%29cc1/file?format=sdf&get3d=True  -- O%3DS%28CCC%29CCCN%28CC%29CC%28O%29COc1ccc%28C%23N%29cc1 could not be loaded.