5,12-Epoxybenzocyclodecene-6,7,8,11-tetrol,tetradecahydro-7,11-dimethyl-4-methylene-1-(1-methylethyl)-, 11-acetate,[1R-(1R*,4aR*,5S*,6S*,7R*,8S*,11R*,12R*,12aR*)]-