52677-96-0 Oxiranecarboxylic acid, 2,3-dimethyl-, 9-(acetyloxy)-2,3,3a,4,5,8,9,11a-octahydro-6,10-dimethyl-3-methylene-2-oxocyclodeca(b)furan-4-yl ester, (3aR-(3aR*,4R*(2R*,3R*),6E,9S*,10E,11aR*))-