英文别名
                        3-(2-[4]pyridyl-ethyl)-1-oxa-3-aza-spiro[4.4]nonane-2,4-dione;3-(2-[4]Pyridyl-aethyl)-1-oxa-3-aza-spiro[4.4]nonan-2,4-dion;3-(2-(4-Pyridyl)ethyl)-1-oxa-3-azaspiro(4.4)nonane-2,4-dione;3-(2-pyridin-4-ylethyl)-1-oxa-3-azaspiro[4.4]nonane-2,4-dione