ERROR opening https://cactus.nci.nih.gov/chemical/structure/c2ccc%28OC%29cc2CC%28%3DO%29c%28cn1CCCCC%29c3ccccc13/file?format=sdf&get3d=True  -- c2ccc%28OC%29cc2CC%28%3DO%29c%28cn1CCCCC%29c3ccccc13 could not be loaded.