15,18,21,24-Tetraoxa-11,28-dithiaoctatriacontane-13,26-diol,1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,31,31,32,32,33,33,34,34,35,35,36,36,37,37,38,38,38-tetratriacontafluoro-