7,10-Epoxycyclodeca(b)furan-2(4H)-one, 4-(acetyloxy)-3-((acetyloxy)methyl)-5,6,7,8,9,10-hexahydro-6,7-dihydroxy-6,10-dimethyl-, (4R,6S,7S,10R,11E)- 72712-41-5