[2-benzyl-6a-hydroxy-8,10-dimethyl-7-oxo-11a-(prop-1-en-2-yl)-3a,6,6a,7,9a,10,11,11a-octahydro-3bH-2,9b-epoxyazuleno[4',5':5,6]benzo[1,2-d][1,3]dioxol-5-yl]methyl 2-[4-(2-methylpropyl)phenyl]propanoate