13,14-(1,3-丁二烯-1,4-二基)-[9,10-(1,3-丁二烯-1,4-二基)-[5,6-(1,3-丁二烯-1,4-二基)-[1,2-(1,3-丁二烯-1,4-二基)-4,8,12,16-四氧杂环十六烷-1,5,9,13-四烯-3,7,11,15-四酮]]]