2,16-dimethyl-28-crown-10

2-phenyl-1,4,7,10,13-pentaoxacyclopentadecane

10-(2-methoxyethyl)-1,4,7-trioxa-10-azacyclododecane

1-苄基-1-氮杂-12-冠-4

2-[2-[2-[2-(2-phenylmethoxyethoxy)ethoxy]ethoxy]ethoxy]acetic acid