15,18,21,24,27,30-Hexaoxa-11,34-dithiatetratetracontane,1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,37,37,38,38,39,39,40,40,41,41,42,42,43,43,44,44,44-tetratriacontafluoro-