ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCO%5CC%28%3DN%5CCCOc1ccc%28Oc2ccccc2%29cc1%29%5CO/file?format=sdf&get3d=True  -- CCO%5CC%28%3DN%5CCCOc1ccc%28Oc2ccccc2%29cc1%29%5CO could not be loaded.