ERROR opening https://cactus.nci.nih.gov/chemical/structure/Cc2ccc%28cc2%29C%28C%28%3DO%29OC%29C1CCCCN1/file?format=sdf&get3d=True  -- Cc2ccc%28cc2%29C%28C%28%3DO%29OC%29C1CCCCN1 could not be loaded.