7,13-dibenzyl-7,13-diaza-1,4,10-trioxacyclopentadecane

1,4,10-trioxa-7,13-diazacyclopentadecane-8,12-dione

7,13-bis(p-tolylsulphonyl)-1,4,10-trioxa-7,13-diazacyclopentadecane

1,2-bis(2-bromoethoxy)ethane

1,2-双(2-碘乙氧基)乙烷