2-Propenoicacid, 3-phenyl-,4,5,10,10b-tetrakis(acetyloxy)-6-(benzoyloxy)-2a,3,4,4a,5,6,8,9,9a,10,10a,10b-dodecahydro-9a-(1-hydroxy-1-methylethyl)-4a,7-dimethyl-1H-azuleno[5',6':3,4]benz[1,2-b]oxet-8-ylester, [2aR-[2aa,4b,4ab,5a,6b,8a(E),9ab,10a,10aa,10ba]