1,4,7,13-tetraoxa-10,16-diazacyclooctadecane-9,17-dione

10,16-bis(p-tolylsulphonyl)-1,4,7,13-tetraoxa-10,16-diazacyclo-octadecane

2,2'-氧双(乙胺)

1-(2-iodoethoxy)-2-[2-(2-iodoethoxy)ethoxy]ethane