ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCCCCC%28C%26%2361%3BCC1C%28C%28CC%28O1%29O%29O%29CC%26%2361%3BCCCCC%28%26%2361%3BO%29O%29O/file?format=sdf&get3d=True -- CCCCCC%28C%26%2361%3BCC1C%28C%28CC%28O1%29O%29O%29CC%26%2361%3BCCCCC%28%26%2361%3BO%29O%29O could not be loaded.