2-{(2R,6R)-6-[(7E,12E)-(2S,6S,10S,11S)-11-(4-Methoxy-benzyloxy)-6-methoxymethoxy-2-methyl-13-((S)-4-methyl-3,6-dihydro-2H-pyran-2-yl)-4-methylene-10-(tetrahydro-pyran-2-yloxy)-trideca-7,12-dienyl]-5,6-dihydro-2H-pyran-2-yl}-ethanol

(2R,6R)-6-(3,3-dibromoallyl)-2-((2S,6S,7E,10S,11S,12E)-11-((4-methoxybenzyl)oxy)-6-(methoxymethoxy)-2-methyl-13-((S)-4-methyl-3,6-dihydro-2H-pyran-2-yl)-4-methylene-10-((tetrahydro-2H-pyran-2-yl)oxy)trideca-7,12-dien-1-yl)-3,6-dihydro-2H-pyran