ERROR opening https://cactus.nci.nih.gov/chemical/structure/c12c%28cc%28oc1cc%28cc2O%29OC%29c1ccc%28cc1%29O%29%3DO/file?format=sdf&get3d=True  -- c12c%28cc%28oc1cc%28cc2O%29OC%29c1ccc%28cc1%29O%29%3DO could not be loaded.