2-Propenoic acid, 2-methyl-, 3-(acetyloxy)-1a,2,3,5a,7,8,8a,9,10,10a-decahydro-4,10a-dimethyl-8-methylene-7-oxooxireno(5,6)cyclodeca(1,2-b)furan-9-yl ester, (1aR-(1aR*,3S*,4E,5aR*,8aR*,9R*,10aS*))- 27542-23-0 Erioflorin acetate