(4S,5R,6S,7Z,9S,11S,12R,13E)-5,9,11-tris(tert-butyldimethylsilyloxy)-4,6,12-trimethyl-15-(trityloxy)pentadeca-7,13-dien-1-ol

((2E,4R,5S,7S,8Z,10S,11R,12S)-5,7,11,15-tetrakis(tert-butyldimethylsilyloxy)-4,10,12-trimethylpentadeca-2,8-dienyloxy)triphenylmethane