Synonyms: Dibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin,di-tert-butyl-6,7,9,10,17,18,20,21-octahydro- (8CI);4,4'(5')-[Di-tert-butyldibenzo]-18-crown-6;Bis(4,4'(5')-tert-butylbenzo)-18-crown-6; Bis(tert-butylbenzo)-18-crown-6;Di(tert-butylbenzo)-18-crown-6; Di-(tert-butylbenzo)-18-crown-6