ERROR opening https://cactus.nci.nih.gov/chemical/structure/OC2%28C%28c1ccc%28O%29cc1%29CN%28C%29C%29CCCCC2/file?format=sdf&get3d=True  -- OC2%28C%28c1ccc%28O%29cc1%29CN%28C%29C%29CCCCC2 could not be loaded.