13018-10-5 2-Butenoic acid, 2-methyl-, 5-(1-(acetyloxy)-1-methylethyl)-1,2,4,5,6,7,8,8a-octahydro-3,8-dimethyl-2-oxo-6-azulenyl ester, (5S-(5alpha,6alpha(Z),8alpha,8aalpha))- 5-(1-(Acetyloxy)-1-methylethyl)-1,2,4,5,6,7,8,8a-octahydro-3,8-dimethyl-2-oxo-6-azulenyl 2-methyl-2-butenoate (5S-(5alpha,6alpha(Z),8alpha,8aalpha))-