2,3,11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecene6,7,9,10,17,18,20,21-八氢二苯并[b,k][1,4,7,10,13,16]六氧杂环十八碳烯2,3,11,12-二苯并-1,4,7,10,13,16-六氧杂环十八-2,11-二烯Dibenzo-18-crown-6二苯并-18-冠醚-6