ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN1CCC2%28CC1%29NCC%28%3DO%29N2Cc1ccccc1/file?format=sdf&get3d=True  -- CN1CCC2%28CC1%29NCC%28%3DO%29N2Cc1ccccc1 could not be loaded.