ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCc3ccc%28cc3%29C%28C1C%28%3DO%29OC%29CC2CCC1N2C/file?format=sdf&get3d=True  -- CCc3ccc%28cc3%29C%28C1C%28%3DO%29OC%29CC2CCC1N2C could not be loaded.