ERROR opening https://cactus.nci.nih.gov/chemical/structure/c12c%28cc%28oc2cc%28O%29c%28c1O%29O%29c1ccc%28cc1%29O%29%3DO/file?format=sdf&get3d=True  -- c12c%28cc%28oc2cc%28O%29c%28c1O%29O%29c1ccc%28cc1%29O%29%3DO could not be loaded.