7,11-Methano-5H-cyclodeca(3,4)benz(1,2-b)oxet-5-one, 6,12b-bis(acetyloxy)-12-(benzoyloxy)-1,2a,3,4,4a,6,9,10,11,12,12a,12b-dodecahydro-4,9,11-trihydroxy-4a-(hydroxymethyl)-8,13,13-trimethyl-, (2aR-(2aalpha,4beta,4abeta,6beta,9alpha,11alpha,12alpha,12aalpha,12balpha))-