3β-Acetyloxyolean-12-en-28-oic acid methyl ester

(4aS,6aS,6bR,10S,12aR,14bR)-Methyl 10-acetoxy-2,2,6a,6b,9,9,12a-heptaMethyl-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14b-icosahydropicene-4a-carboxylate